For this, we are just going to plug in -9 for every x and then solve the equation:




Now we know that q(-9) is equal to 566.
3.24 + 5.70 + 6.17 = 15.11
20.00 - 15.11 = 5.11
He got 5.11$ of change back.
Answer:
Students 1 and 2
Step-by-step explanation: