Uh need a bit of with this question

When we multiply two powers of a common base, we add the exponents.  That's the familiar rule

So here

C

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.

she will travel a distance in the range of 3 - 11 miles