The percentage of students in this class who have been outside the United States OU: Variable:

good luck on your studies! : )

david edward.

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.

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8