<h2>
Explanation:</h2><h2>
</h2>
We know some facts:
- x for the original price.
- The store has a coupon for $10 off and a discount of 20%
- C for the price after the coupon is applied.
So from the statement 2, you can realize there are two types of discounts:
- The discount offered by the coupon
- The discount offered by 20%
Since we need to write a function just for the coupon, then we don't include the discount offered as percentage, then we subtract the coupon from the original price:

Answer:
60
Step-by-step explanation:
60 as it equaliteral all side are 60
Answer:
(c) all real numbers
domain of f(x)= x is the whole of real numbers R.