Question

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?

Answer 1

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.

Answer 2

Will give medal ༼ つ ◕_◕ ༽つ

Answer 3

@pooja195

Answer 4

@Deltaman31

Answer 5

@jagr2713

Answer 6

@Zale101 @ParthKohli ;-;

Answer 7

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

Answer 8

Whats happening to the amount of money after each month?

Answer 9

Its being subtracted by 15

Answer 10

ok can u come up with a rule for that?

Answer 11

x = -15?

Answer 12

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

Answer 13

Make a formula.

Answer 14

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

Answer 15

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

Answer 16

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

Answer 17

y = 6.67?

Answer 18

Show your work plz m8

Answer 19

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?

Answer 20

Hmm...

Answer 21

It's 68 I believe...

Answer 22

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

Answer 23

Ok thanks.