Solve the problem.
-When making a long distance call from a certain pay phone, the first three minutes of a call cost $2.40. After that, each additional minute or portion of a minute of that call costs $0.30. Use an inequality to find the number
Of minutes one can call long distance for $4.20.
A)9 minutes or fewer
B)14 minutes or fewer
C)2 minutes or fewer
D)6 minutes or fewer

Question

Quizplus · Accepted Answer

The cost of the first three minutes is $2.40. Each additional minute costs $0.30. To spend no more than $4.20, subtract the initial cost from the total budget: $4.20 - $2.40 = $1.80. Divide the remaining budget by the cost per additional minute: $1.80 / $0.30 = 6 additional minutes. Adding the initial 3 minutes, the total is 9 minutes or fewer.

Solve the Problem. -When Making a Long Distance Call from a Certain Pay