Question

99 POINTS

For his phone service, Charlie pays a monthly fee of $ 18 , and he pays an additional $ 0.06 per minute of use. The least he has been charged in a month is $ 102.24 . What are the possible numbers of minutes he has used his phone in a month? Use m for the number of minutes, and solve your inequality for m .

Answer 1

102.24 ≤ 18 + .06(m)

Let m = # of minutes

84.24 ≤ .06(m)

x ≤ 1404

Explanation:

Answer 2

m - the number of minutes

The inequality:

`18+0.06m \geq 102.24\ \ \ \ |-18\\\\0.06m \geq 84.24\ \ \ \ |\cdot100\\\\6m \geq 8424\ \ \ \ |:6\\\\\boxed{m \geq 1404}`

Answer: greater than or equal to 1404.