Question

The monthly cost of using a cell phone is $29.95 plus $0.035 per minute of talk time. An equation to

represent this monthly cost would be:
C = 29.95 + 0.035x, where C represents the monthly cost and x represents the number of minutes used.
How many minutes were used during a month if the cost amounted to $43.53 ?
O 506 minutes
O 426 minutes
O 388 minutes
438 minutes

Answer 1

c) 388 minutes

Explanation:

Given equation,

→ C = 29.95 + 0.035x

Then the call duration will be,

→ C = 29.95 + 0.035x

→ 43.53 = 29.95 + 0.035x

→ 0.035x = 43.53 - 29.95

→ x = 13.58/0.035

→ [ x = 388 ]

Hence, option (c) is correct.