A store has a coupon for $10 off and a discount of 20%. Write a function for the coupon. Use x for the original price and C for the price after the coupon is applied.

We know some facts:

So from the statement 2, you can realize there are two types of discounts:

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:

step-by-step explanation:

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