Let f(x) = x − 2 and g(x) = x2 − 7x − 9. find f(g(− select one: a. −21 b. −3 c. 3 d. 21

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.