Question

A standard showerhead in Andrew's house dispenses 8 gallons of water per minute. Andrew changed this showerhead to an energy-saving one. The equation shows the amount of water dispensed, y, as a function of the number of minutes, x, for the new showerhead.

y = 3x

How much water does Andrew save each day with the change in showerheads if he uses the shower for 8 minutes each day?

5 gallons
16 gallons
24 gallons
40 gallons

Answer 1

@Michele_Laino

Answer 2

the requested quantity, is given by the subsequent difference:
amount of water with \(old\) showerhead - amount of water with the \(new\) showerhead=

= \((8 \times 8) - (3 \times 8)...?\)

Answer 3

64-24 = 40

Answer 4

correct!

Answer 5

Ada and Steve spend a certain amount of money from their accounts each week at a pet shelter.

The table shows the relationship between the amount of money (y) remaining in Ada's account and the number of weeks (x):

Function 1:


Number of Weeks
(x) Amount Remaining (dollars)
(y)
1 40
2 36
3 32
4 28


The equation shows the relationship between the amount of money, y, remaining in Steve's account and the number of weeks, x:

Function 2:

y = –5x + 40

Which statement explains which function shows a greater rate of change?
Function 1, because Ada spends $4 each week and Steve spends –$5 each week
Function 1, because Ada spends $12 each week and Steve spends $35 each week
Function 2, because Steve spends $5 each week and Ada spends $4 each week
Function 2, because Steve spends $40 each week and Ada spends $12 each week