The equation d = 22.5n + 27.5 represents the amount of money, in dollars, that Kathryn earns for each sale she makes. The variable n represents the number of items sold, and the variable d represents the total amount of money earned. What is the number of items Kathryn must sell in order to earn $500?

A)10

B)17

C)21

D)23

The answer is C

Step-by-step explanation:

If you use inverse operations and do 500-27.5=472.5 and ÷ that by 22.5 you will get 21. If you wanted to check it you can do 22.5×21+27.5=500

Hope that helps

x=17

step-by-step explanation:

solve 3x-24=x+10

then that makes it 2x=34 because you subtract an x from both sides to get rid of the one on the right, and then you add 24 to both sides to get rid of the 24 on the left

divide by both sides by 2 to get your answer so that you can get your answer