The area of a rectangular school yard is given by the equation x^2 + 19x + 90 as measured in square yards. The teacher wants you to run the length. How far will you run if x = 30?

a = 11 : 4

b = 38

c = 1 for every 6

sorry, i can't understand your question. will later if you describe more clearly!

: )

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