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Hakim is a kickboxing instructor who will be teaching classes at a local gym. To get certified as an instructor, he spent a total of $90. Hakim will be earning a base salary of $70 per month from the gym, plus an additional $5 for every class he teaches. If Hakim teaches a certain number of classes during his first month as an instructor, he will earn back the amount he spent on certification. How many classes will that take?

Respuesta :

rorycampbell0721

Answer:

4 classes

Step-by-step explanation:

So to solve this problem, you can make an equation. Since he makes $70 per month and $5 per class, and you're trying to figure out how many classes he has to take to get $90, you have the equation 70 + 5x = 90.

Then, you solve:

[tex]5x + 70 = 90[/tex]

subtract 70 from both sides

[tex]5x = 20[/tex]

divide both sides by 5

[tex]x = 4[/tex]

So you get that he has to take 4 classes.