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Ulleksa [173]
3 years ago
8

The function below can be used to calculate the cost of making a long distance call, f(m), which is based on a $2.50 initial cha

rge and a fee of $.12 per minute, m, that the call lasts. If Natalie paid $6.82 for one call, how many minutes long was it?
Mathematics
1 answer:
Vera_Pavlovna [14]3 years ago
5 0
F(m) = 2.5 + 0.12m

if Natalie paid $6.82

6.82 = 2.5 + 0.12m
0.12m = 6.82 - 2.5
0.12m = 4.32
m = 4.32 ÷ 0.12
m = 36

The call was 36 minutes long.
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