Question

Kathy's internet company charges a connection fee of 0.21 cents for each call and 0.06 cents per minute for each call she made from her computer. Kathy was charged $1.95 for five calls in January. Write an equation that can be used to determine the number of minutes Kathy talked on 5 calls in January.

Answer 1

1.95 = .21(5) + .06m

1.95 = 1.05 + .06m

Solving (if needed)
Subtract 1.05 from each side
1.95 - 1.05 = .06m
.90 = .06m
Divide .06 on both sides
15 = m