189 because 20.7 rounds to 21 and 9.18 rounds to 9
21 * 9 = 189
It's 21.125 hope this works good luck ;)
Let C(x) be the function which calculates the total cost of making x skirts.
There is going to be a fixed constant, 250, to which we will add 15$ per x skirts.
So C(x)=250+15x
Answer: 250+15x
