carla paid for an introduction to painting course at color castle art studio. the cost of the course covers…

carla paid for an introduction to painting course at color castle art studio. the cost of the course covers 12 painting classes. she also bought a beginners painting kit for $28. carla paid $220 in all. how much does each painting class cost?
Answer
Explanation:
Step1: Subtract kit cost from total
Let $x$ be the total cost of 12 - class course. We know that the total amount paid is $220$ and the cost of the painting - kit is $28$. So, $x=220 - 28$. $x = 220-28=192$
Step2: Calculate cost per class
If the total cost of 12 classes is $x = 192$, and we want to find the cost per class $y$. We use the formula $y=\frac{x}{12}$. $y=\frac{192}{12}=16$
Answer:
$16$