This week Kyara worked x + 4 hours. She is paid x - 4 dollar per hour. Write a polynomial for the amount that Kyara earned this week. Then calculate her pay if x = 12.

Polynomial equation is x² - 16

Her pay if x = 12 is $128

Step-by-step explanation:

This week, Kyara worked x + 4 hours

She is paid x - 4 dollars per hour

She earned (x + 4) (x - 4) = x² - 16 dollars this week

Her pay if x - 12 is;

12² - 16 = $128