How do i find the scale factor for a citie that is a 100 miles apart, but on a map it is just 5 inches apart

Match each function with the corresponding function formula when h(x)=5-3x and g(x)=-3+5

Alength on a map is 7.5 inches. thescale is 1 inch: 5 miles. what is theactual distance? a 1.5 miles c 12.5 milesb 2.5 miles d 37.5 miles

How to write four times a number,minus 6,is equal to theee times the number+8 as an equqtion