Question

A karate studio charges $35 for the first course and $22.50 for each course after that, even if the student leaves the course early. Cena paid $170 for her son to take courses. How many courses did he take? 6 courses 7 courses 8 courses 10 courses

Answer 1

Hello there!

Remember that we already have one course for $35, and $22.50 for each course after that. Our total is $170.
Our equation is:
22.50x + 35 = 170

First, subtract 35 from both sides.
22.50x = 135

Divide both sides by 22.50.

x = 6
Remember to add the additional class, so x is actually 7.

Your answer is 7 courses.

I hope this helps!