Noah put $40 on his fare card. Every time he rides public transportation, $2.50 is subtracted from the amount available on his card.
How much money, in dollars, is available on his card after he takes
• O rides?
1 ride?
• 2 rides?
.
x rides?

f is the midpoint of

the answer is simply just 6n add the two together as they have an n

answer: -10

step-by-step explanation:

s(t) = 1 - 10t

s(x) = 1 - 10x

s(x + h) = 1 - 10(x + h)

            = 1 - 10x - 10h

s(x + h) - s(x) = 1 - 10x - 10h - (1 - 10x)

                      = 1 - 10x - 10h - 1 + 10x

                      = -10h

= -10