At the beginning of May, the electric meter on a house showed 648.19 kilowatt hours. At the end of May, the electric meter on the same house showed 1,128.21 kilowatt hours. How many kilowatt hours of electricity were used during May?

is this part of a question or something

ratio is 2 : 9

the answer is three

13.5 : 3

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