For items 9 and 10, refer to the given problem in the box below.
Troy bought 10 banana cues for P5.00
each and 5 botties of mineral water for P8.00 each for their afternoon snacks with his family. He gave the cashier a P100.00 bill.
9. Write an expression for the cost of the snacks he bought?
10. Write the equation for the amount of change the cashier should give him?

10. Write the equation for the amount of change the cashier should give him?
Answer:
9 answer is – 90
10 answer is – 10