Answer:
a. 12(p-8) = 174
b. $22.50
Explanation:
a. an equation that can be used to solve this problem is 12(p-8) = 174.
We know that 8 dollars was taken off the original price, p. Since Billy bought 12 number ninja bags, we would need to multiply the price, p, minus 8 dollars by 12, hence 12(p- 8).
Now, we also know that Billy paid 174 dollars for the 12 bags he bought so the total amount would be equal to 174, so we would set up the 12 (p-8) = 174.
b. To solve 12 (p-8) = 174, we would need to isolate p.
Step 1. divide each side by 12
12 (p - 8) = 174
÷12 ÷12
Step 2. add 8 to each side
p - 8 = 14.50
+8 +8
Step 3. get our final answer
p = $22.50
The regular price, p , would be 22.50 dollars.