Exercise 42 Page 874

A collector's model car is scaled so that 1 inch on the model equals 5.75 feet on the actual car. 1inch on Model- 5.75feet on CarThe model is 45=0.8 inches high. We are asked to find the height of the actual car. Let h denote the height of the car. Therefore, we can write the following proportion. ccc 1inch on Model & - & 5.75feet on Car 0.8inches on Model & - & hfeet on Car ⇓ 1/0.8=5.75/h Now, let's solve this equation.

1/0.8=5.75/h

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Solve for h

MultEqn

LHS * 0.8=RHS* 0.8

1=5.75/h*0.8

MultEqn

LHS * h=RHS* h

1* h =5.75*0.8

OneMult

1* a=a

h=0.8* 5.75

Multiply

Multiply

h=4.6

The height of the actual car is 4.6 feet.