What is a scale factor because i'm new to 7th grade and i'm clueless.

A scale factor is a number which scales, or multiplies, some quantity.

Step-by-step explanation:

i.e: this shape multiplied by a scale factor of 2. Usually solved by a ratio

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.