Lenny and Thad spend a certain amount of money from their money box each month to buy comic books.
The table shows the relationship between the amount of money (y) remaining in Lenny's money box and the number of months (x):
Function 1
Number of Months
(x) Amount Remaining (in $)
(y)
1 75
2 60
3 45
4 30
The equation shows the relationship between the amount of money (y) remaining in Thad’s money box and the number of months (x):
Function 2:
y = −12x + 80
Which statement explains which function shows a greater rate of change?

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- anonymous

A) Function 2 shows a greater rate of change, because Lenny spends $15 each month and Thad spends $12 each month.
B) Function 2 shows a greater rate of change, because Lenny spends $75 each month and Thad spends $12 each month.
Function 1 shows a greater rate of change, because Lenny spends $15 each month and
C) Thad spends $12 each month.
Function 1 shows a greater rate of change, because Lenny spends $15 each month and D)Thad spends $80 each month.

- anonymous

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## More answers

- anonymous

- anonymous

- pooja195

@Zale101 @ParthKohli ;-;

- pooja195

Heres the table
number of months. (the x) amount in dollars. (the y)
\(\large\color{black}{ 1 }\) \(\large\color{black}{ 75 }\)
\(\large\color{black}{ 2 }\) \(\large\color{black}{ 60 }\)
\(\large\color{black}{ 3 }\) \(\large\color{black}{ 45 }\)
\(\large\color{black}{ 4 }\) \(\large\color{black}{ 30 }\)

- pooja195

Whats happening to the amount of money after each month?

- anonymous

Its being subtracted by 15

- pooja195

ok can u come up with a rule for that?

- anonymous

x = -15?

- pooja195

im not sure :/ i think u do need a rule or something @undeadknight26 any ideas? >.>

- undeadknight26

Make a formula.

- undeadknight26

Or you can just solve the 2nd equation for 1,2,3,4,5 etc

- anonymous

Ok, but im still not sure what you mean... ;n;

- undeadknight26

Hmm...Lets take function two:
y = −12x + 80
Solve y for x = 1.

- anonymous

y = 6.67?

- undeadknight26

Show your work plz m8

- anonymous

Well ,first I divided 12 by both sides, 12/12 which cancels out, and 12/80
Then I got 6.6 repeated...
Am I doing this right?

- undeadknight26

Hmm...

- undeadknight26

It's 68 I believe...

- undeadknight26

The change of rate:
Function 1: 15
Function 2: 12.

- anonymous

Ok thanks.

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