T8510
5) adele went to the post office to buy regular stamps and postcards stam
she bought a total of 25 stamps, some 39-cent stamps and the rest 23-cent postcard stamps.
if she paid $8.47 altogether, how many 39-cent stamps did she buy?

if you was gonna solve for a, a is a   < -12

21

jk it's 20

step-by-step explanation:

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

step-by-step explanation: