Evaluate the expression when b = 100 3/9 (b-64)

12

Step-by-step explanation:

3

9

(100−64)

=12

x intercept = (-1,0)   (4,0)

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.