You finally get an allowance! you put 2 dollars away in january, 4 dollars away in feburary, 8 dollars away in march, 16 dollars away in april and follwed this savings pattern through in december. how much money do you have in 12 months?

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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