7. let f(x)=4x+7 and g(x)=3x-5. find (g o f )
a. -61
b. -32
c. -9
d. -64

The answer is the option B

Step-by-step explanation:

we have

we know that

substitute

Find

Substitute the value of in the equation

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.