10. If you have (10x3 - 2x + 5) pesos in your wallet and you spent (5x3 – 2x + 15) pesos in buying foods, how much money is left in your pocket?
A. (5x - 10) pesos
B. (5x3 + 20) pesos
C. (5x3 + 10) pesos
D. (5x3 - 20) pesos

11. Mario was asked by his teacher to multiply (x + 5) (x - 5) on the board. Which of the following must be written in order to get the correct answer?
A. x2 + 10x - 25
B. x2 + 10x + 10
C. x2 + 25
D. x2 - 25

12. The width of a rectangle is (xy) cm and its area is (x4y2 + xy) cm2. What is the measure of its length?
A. xy + 1
В. xу - 1
C. xy + 2
D. xy - 2

13. Mr.Lopez can walk 5 kph. How far can he walk in (x + 2) hours?
A. (5x + 2) km
B. (5x + 3) km #
C. (5x + 8) km
D. (5x + 10) km

14. The first number is (x + 1), and the second number is 2 times the first number. What is their sum?
A. 3x + 6
B. 3x + 3
C. 3x + 9
D. 3x - 9

15.The amount of (2 000 x + 5 000 y + 8 000 z) pesos was divided among 10 sections of junior high school students. How much was the share of each section?
A. (200 x + 500 y + 800 z) pesos
B. (2000 x + 500 y + 800 z) pesos
C. (200 x + 5 000 y + 800 z) pesos
D. (200 x + 500 y + 8 000 z) pesos​