21. What must be added to -9 to have a sum of 20?
a. 9
b. 19
c. 29
d.39
22. What is the difference if -12 is subtracted from 45
a. 33
b. 47
c. 23
d. 57
23. The product of two numbers is -39,483. If one number is 123, what is the other number?
a. -123
b. -321
c. 321
d. -231
24. In a Math contest, every correct answer is worth 3 points, and every wrong answer is worth -2 points. If Ralph answered 30 questions correctly and got 10 wrong answers, what is his total points?
a. 50
b. 60
c. 70
d. 80
25. What is the product of (-2)5?
a. -10
b. 10
c. 32
d. -32
(Pls help me it’s due today :,D)