A.) 18

B.) 22.5

C,) 36

D.) 45

E.) 90

**Set up a proportion.**

0.5 inch 2.5 inches

------------ = ---------------------- {set up a proportion, comparing inches to miles}

18 miles x miles

0.5x = 45 {cross-multiplied}

x = 90 {divided each side by 0.5}

**E.) 90**

**- Algebra House**