1. The number increased by 9 A. n +9 B. n-9 C nx9 Dn9 2. The square of the difference of a and b A. Za+b B.2a-b C. (a+b) D. (a-b 3. Six times a number subtracted from 100 A 100+6n B.6n-100 C. 100+6n D.100-6n 4. When 7 is added to five times a number, the result is 22. A.5n+7=22 3.7+5n=22 C. 7-5n=22 D.5n-7=22 5. The quotient of a number and 3 multiplied by 2 is 18. A. (n+3) x2=18 B. (n-3) x2=18 C. (nx3)-2=18 D. (n+3) x2=18