Let f(x) = 5x - 10 and g(x) = x2 - 7. Find f(g(8)).

275

Step-by-step explanation:

First, find g(8).

g(x) = x^2 - 7

g(8) = 8^2 - 7

g(8) = 64 - 7

g(8) = 57

Now find f(g(8)).

f(x) = 5x - 20

f(g(8)) = f(57)

f(57) = 5(57) - 10

f(57) = 285 - 10

f(57) = 275

f(g(8)) = 275

b. hannah is playing with her cousin at

5 feet of chain cost $9

so the answer is 1.80