). (a) how much does it cost to derive 100 miles if your cat gets 25 miles per gallon and the
asoline costs 2.50/gallon.
b). find a formula that gives the cost c as a function of m, g, and d. be sure to state the units of
each variable,
evetything

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

hope it

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