Please help me by checking my work! I will medal and fan!

- Ms-Brains

Please help me by checking my work! I will medal and fan!

- Stacey Warren - Expert brainly.com

Hey! We 've verified this expert answer for you, click below to unlock the details :)

- schrodinger

I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!

- Ms-Brains

1. I think it's B.. @Nay_Af

##### 1 Attachment

- pooja195

I'm sorry but we're not allowed to help on tests/quizzes/exams/assignments here :/
that would be considered cheating :(

- Ms-Brains

Um.. it's not a test, it's like practice problems for studying.. I want to know if I worked the problems out properly and get them correct. @pooja195

Looking for something else?

Not the answer you are looking for? Search for more explanations.

## More answers

- pooja195

Its labeled quiz questions.

- jigglypuff314

at most 130 means that it can include that number (I think)

- Nay_Af

Option C seems correct (less than or equal to 130)

- Ms-Brains

I know! I just have it labeled that. Gosh, I'm sorry. I thought open study was for helping, and understanding. It's not like I'm telling people to give me answers. damn chiil @pooja195

- pooja195

You would have your answer if you knew what "at most" meant since theres only one option that matches that :)
And im sorry for being rude. I thought it was a quiz question since it was labeled that way.

- jigglypuff314

@Nay_Af would you mind also explaining how you got that answer so that Ms-Brains can understand for future similar questions?

- Ms-Brains

You guys are just crowding up my question. @pooja195 and @jigglypuff314 That wasn't cool. Thanks for trying to help @Nay_Af

- jigglypuff314

I'm not cool? ;-;
how come?
I was pointing out "at most 130 means that it can include that number" for you

- Nay_Af

Perimeter = Sum of the sides.
Length = 4 times Width
L = 4 W
Perimeter = L + W + L + W
P = 2W + 2 L
P = 2W + 2 (4W)
Since, it is said that the perimeter is at most 130, that means that its maximum value can be 130, and that it can be less than 130 as well.
That's why, option C is the correct option that gives equal to or less than 130.

- Ms-Brains

I'm sorry, I've just been trying to figure this out since last night, and it's making me frustrated. I'm sure you're a pretty cool person. :) I didn't mean to include you in that. @jigglypuff314

- jigglypuff314

much better @Nay_Af ! well done :)

- Ms-Brains

Can you help with this one? I think it is C, or A I'm a little lost..

##### 1 Attachment

- Ms-Brains

@Nay_Af

- Nay_Af

Sure. Give me a minute.

- Nay_Af

Length = 3 times Width
L = 3W
Perimeter is maximum 112 cm.
P = Sum of the sides.
P = L + W + L + W
P = 2W + 2L
Using L = 3W, it becomes,
P = 2W + 2(3W)
P = 2W + 6W
P = 8W
As it is already given that maximum perimeter is 112 cm.
So, P = 8W = 112 cm
8W = 112
W = 112/8
W = 14 cm (that should be the maximum value of width)

- Ms-Brains

Oh! Okay, I understand. I get where I went wrong.
I think this next one is C?

##### 1 Attachment

- Ms-Brains

@Nay_Af Can you confirm?

- Nay_Af

Sure. Please wait again till I solve it on paper.

- Nay_Af

Reiko started a business.
Her expenditures:
- $6500 to obtain merhandise
- $550 per week for other expenses. It means, for 2 weeks, it will be $550 (2). For 3 weeks, it will be $550 (3) and so on. So, take it as $550 W where W = number of weeks.
So, total expenditure= $6500 + $550W
Now, see her earnings:
She earns $900 per week. So, for W number of weeks, her earning should be $900W
Question asks for the minumum number of weeks to make a profit.
Remember: To make profit, earnings should be greater than expenditures.
So, earnings > expenditures
$900W > $6500 + $550W

- Ms-Brains

It's B?

- Nay_Af

Yes, it's B according to my calculations.

- Ms-Brains

Okay last one I need help on. :) @Nay_Af
I'm thinking C again

##### 1 Attachment

- Nay_Af

Sure. Wait a while.

- Ms-Brains

Okay.

- Nay_Af

Josephine started a business.
Her expenditures:
- $4500 to obtain merchandise
- $200 per week for other expenses. For 2 weeks, it will be $200 (2). For 3 weeks, it will be $200 (3) and so on. So, take it as $200W where W = number of weeks.
So, total expenditure= $4500 + $200W
Now, see her earnings:
She earns $550 per week. So, for W number of weeks, her earning should be $550W
Question asks for the minimum number of weeks to make a profit.
Again: to make profit, earnings should be greater than expenditures.
So, earnings > expenditures
550W > 4500 + 200W
550W - 200W > 4500
350W > 4500
W > 4500/350
W > 12.85
So, more than 12.85 weeks are required.
Given options are: 14, 12, 13, 15.
12 is wrong. So, drop this option.
Since, question asked for minimum number of weeks, we will choose the minimum number from the remaining options. So, 13 seems the correct answer.

- Ms-Brains

Yay! I' at least got one correct. cx Thanks for the help!

- Nay_Af

Awesome :)
You're welcome and best of luck.

- Ms-Brains

You got most of them correct! now I'm ready to begin the quiz!
This one was incorrect though...

##### 1 Attachment

- Ms-Brains

I thought' i'd let you know. cx Bye thanks!

- Nay_Af

Let Sue's age = x
Jenny's age = y
y = 2x + 8
Also, x + y < 32
So, x + 2x + 8 < 32
3x + 8 < 32
3x < 24
x< 8
Since Sue's age is coming less than 8 after solving the inequality. The answer should be 7.

Looking for something else?

Not the answer you are looking for? Search for more explanations.