help!

- anonymous

help!

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- anonymous

@Loser66

- anonymous

Craig wants to use an elevator to carry identical packages having the same weight. Each package weighs 4 pounds and Craig weighs 90 pounds. If the elevator can carry a maximum of 330 pounds at a time, which inequality shows the maximum number of packages, n, that Craig can carry with himself in the elevator if he is the only passenger?
n ≥ 60
n ≤ 60
n ≤ 236
n ≥ 236

- anonymous

@Loser66

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## More answers

- anonymous

@Vocaloid

- lfreeman1285

The maximum amount of weight allowed in the elevator is 330.
This means that
\[4x+90\le330\]
Where x is the amount of packages.
All you have to do is solve for x, and there's your answer!

- anonymous

x=60?

- anonymous

b?

- lfreeman1285

Yes

- anonymous

@Vocaloid is b correct?

- Vocaloid

yes

- anonymous

ok :)

- anonymous

What is the first step needed to solve 3 over 4 multiplied by x minus 3 equals negative 18?
Add 3 to both sides
Subtract 18 from both sides
Multiply both sides by 3
Divide both sides by 4

- anonymous

a?

- Vocaloid

hmm,,,
(3/4)x - 3 = -18
I guess I would add 3 to both sides first to get x by itself

- anonymous

okay :)

- anonymous

Brent has two barcode printing machines. Each machine can print 25 barcodes per minute. On day 1, only the first machine was used, and it printed 95 barcodes. On the following day, the first machine printed for x minutes and the second machine printed for y minutes. Which expression shows the total number of barcodes printed by both machines during these two days?
95 + 25x + 25y
120x + 25y
25 + 95x + y
95x + 50y

- anonymous

A?

- anonymous

@Vocaloid

- Vocaloid

number of barcodes printed on day 1 + (number of barcodes per minute)x + (number of barcodes per minute)y

- anonymous

right A :)

- anonymous

Select True or False.
The expression 3x − 4(2x − 5) is equivalent to the expression 20 − 5x.
True
False

- LynFran

sorry but please click on the lnk below @Vocaloid http://openstudy.com/study#/updates/55e3a8fce4b03567e11074e8

- Vocaloid

well, start by distributing the 4

- anonymous

-5x + 20, so false ?

- Vocaloid

yup, that's correct, good job

- anonymous

Bruno bought 96 pounds of sugar for his bakery. Every day he used the same amount of sugar to make bakery items. After 10 days, Bruno was left with 15.2 pounds of sugar. On average, how many pounds of sugar did Bruno use each day?
5.60 pounds
8.08 pounds
11.12 pounds
18.46 pounds

- Vocaloid

well, he started off with 96 pounds and he had 15.2 left, how much did he use up?

- anonymous

80.8

- anonymous

b?

- Vocaloid

yup

- anonymous

The sum of three consecutive numbers is 84. What is the largest of these numbers?
26
27
28
29

- Vocaloid

"consecutive" means three numbers that increase by 1 each time, so we have
x
x + 1
x + 1 + 1
add them together, and set them equal to 84
x + x + 1 + x + 1 + 1 = 84
first step is to solve for x

- anonymous

x=27

- Vocaloid

right, now find x + 1 + 1

- anonymous

x + 2

- Vocaloid

now plug in your x value

- Vocaloid

x = 27, x + 2 = ?

- anonymous

um help me with this one

- Vocaloid

well, ok, you solved the equation I gave you and got x = 27. this means we can replace "x" with "27" whenever we see x
so, if x = 27, then x + 2 = ?

- anonymous

oh so...
27 = 27 and 27 + 2

- Vocaloid

yup, so x + 2 = 27 + 2 = 29, and 29 is your answer

- anonymous

oh i get it ..okie dokie :))

- anonymous

Lara has violet and blue pansies in groups of 5. She has x groups of violet pansies and y groups of blue pansies. Which expression shows the total number of pansies that Lara has?
5x + y
5x + 5y
x + 5y
x over 5 + y over 5

- Vocaloid

well, we'll use multiplication
there are 5 pansies in 1 group of pansies, so there are 5x pansies in 5 groups of pansies

- anonymous

ok

- anonymous

soo??

- Vocaloid

there are x groups of violet pansies, and y groups of blue pansies, and 5 pansies in each group, giving us 5x and 5y... now add them...

- anonymous

a?

- Vocaloid

nope, remember, 5x and 5y...

- anonymous

b

- Vocaloid

correct

- anonymous

Which unit rate is the lowest price per ounce?
Choice A: 6 ounces of raisins for $1.49
Choice B: 13 ounces of raisins for $3.59
Choice A
Choice B
The unit rates are equal.
The unit rates cannot be determined.

- Vocaloid

divide cost by number of ounces, then see whether choice A or B is bigger

- anonymous

A is bigger

- anonymous

##### 1 Attachment

- Vocaloid

oh wait, for the other problem, it wants the smaller one, so it would be choice B

- anonymous

oh okay! :)

- Vocaloid

anyway, for the graph problem, a proportional relationship just means it will be a straight line starting from (0,0)

- anonymous

c?

- anonymous

c?

- Vocaloid

yeah, c, sorry I got distracted a bit

- anonymous

its okay.. lol :)

- anonymous

##### 1 Attachment

- anonymous

@Vocaloid

- Vocaloid

for each of the rows, calculate how much 1 cupcake costs
if the cost is the same each time, then the relationship is proportional

- anonymous

how do i calculate

- Vocaloid

well, just look at row 1
if 3 cupcakes cost 12, then how much does 1 cost?

- anonymous

12

- anonymous

oh i mean $4

- Vocaloid

right, now keep going for each of the other rows in the table

- anonymous

they are all 4

- Vocaloid

good, that means the relationship is proportional, and the price of the cupcakes is 4 times the number of cupcakes

- Vocaloid

now look at the answer choices

- anonymous

A

- Vocaloid

nope, read carefully

- Vocaloid

the relationship is proportional, and the price of the cupcakes is 4 times the number of cupcakes

- anonymous

b

- Vocaloid

right

- anonymous

##### 1 Attachment

- Vocaloid

well, x-axis = number of tables and y-axis = number of chairs, so what do you think (1,4) means?

- anonymous

A?

- Vocaloid

correct

- anonymous

##### 1 Attachment

- anonymous

@Vocaloid

- Vocaloid

well, read the graph, and tell em how many cups of cherry juice there are for 1 cup of lime soda

- anonymous

c?

- Vocaloid

nope, just look at the graph and tell me how many cups of cherry juice for ONE cup of lime soda

- anonymous

4

- Vocaloid

read the graph carefully...

- Vocaloid

lemon-lime soda = 1
cherry juice = ?

- anonymous

i dont get it :(

- Vocaloid

read the graph carefully
when lemon-soda = 1, what does cherry juice = ?

- Vocaloid

lemon soda is the x, cherry juice is y...

- anonymous

5

- Vocaloid

yup, so that makes our ratio 5:1

- anonymous

okay!

- anonymous

##### 1 Attachment

- Vocaloid

easy, just figure out how many ounces are in one bag

- anonymous

@Vocaloid A?

- Vocaloid

great, yes

- anonymous

The price of pears at a farm is $1.41 per pound. Which equation can be used to determine c, the total price of n pounds of pears?
c equals 1.41 over n
c = 1.41 + n
c = 1.41 − n
c = 1.41n

- anonymous

@Vocaloid

- Vocaloid

hint: the answer involves multiplication

- anonymous

D?

- Vocaloid

yes

- anonymous

##### 1 Attachment

- anonymous

@Vocaloid

- Vocaloid

first find the price of 1 hat using the graph

- anonymous

13

- anonymous

c?

- Vocaloid

nope... the graph tells us that 2 hats cost 13.00... so 1 hat costs?

- anonymous

6.5?

- anonymous

@Vocaloid

- Vocaloid

right, so our answer is...?

- Vocaloid

I have to take care of some business right now, I'll try to get back later if I can
@Luigi0210 @triciaal

- anonymous

b? @Vocaloid

- anonymous

@Michele_Laino

- triciaal

ok let me start reading really don't like long threads

- triciaal

can you do a new question then tag me?

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