Question

Let f(x) = 8x - 7 what is f(4)

Answer 1

f(4) = 25

Explanation:

f(x) = 8x - 7

If we want to know when x = 4 what is the y value we have to subsitute 4 for x!

So...

f(4) = 8(4) - 7

f(4) = 32 - 7

f(4) = 25!

Answer 2

25

Explanation:

plug 4 into x. 8 times 4 equals 32. Subtract 7 from 32 and you'll get 25