Ineed with this. 20 points! if f(x) = 5x - 4, then what is the value of f(7)?

answer: 12

step-by-step explanation:

because yes

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.