Algebra-1

To determine how many classes need to be attended for Plan A to cost less than Plan B, we can set up the inequality.

Let x represent the number of classes.

Define the cost for each plan:

Plan A

Charges a $59.90 sign-up fee plus $5 per class.

Cost for x classes: 59.90 + 5x

Second Service

Charges a $39.90 sign-up fee plus $7.50 per class.

Cost for x classes: 39.90 + 7.50x

Set up the inequality to find when Plan A is cheaper than Plan B:

59.90 + 5x < 39.90 + 7.50x