Answer:

Step-by-step explanation:
Given


Required
Determine the regular price (R)
From the question, we understand that:

So, we have:



<em>Hence, the regular price is $903.125</em>
3x + 14 = 143
3x = 129
X = 43
The answer is C, when numbers or variables are between "|" (also called bars) it means to remove any negative symbols and think of it as a positive number. If the number is already positive you keep it a positive number.
Answer: 10a + 15b
Step-by-step explanation: