Solve for x in the triangle. round your answer to the nearest tenth.

cos = adjacent/hypotenuse

cos 31° = 20/x

Cross multiply.

0.8571673007x = 20

Divide both sides by cos 31°.

x = 23.3 (rounded to nearest tenth).

let y equal to

the total fare and x is the mile of taxi ride. so the equation is

y = 0.55x + 1.75

since susie has

$10 to spend for a taxi cab, so he can have

10 = 0.55x +

1.75

x = 15 miles of

taxi ride

so the system of

inequality is

10 < 0.55x +

1.75

x > 2