Answer:
A) 750 km
Step-by-step explanation:
Salt Lake City and Arizona is 21 cm apart on a scale drawing.
if : 7 cm = 250 km
then: 21 cm = ?
To get from 7 to 21, you'll have to multiply by 3. (What ever you do to one side, you'll have to do to the other.) So, 250 multiplied by 3 would get you the answer.
250 x 3 = 750
