9. Use substitution, 20 + 0.07(100) --) 20 + 7 --) $27; the answers D.
10. A is the answer for it the total number treats is divided by 10 and suppose to be equal to 60 bags.
11. 33.07 + 5.89 + 5(2.71) + 6.75 = amount you had in the beginning.
12. 4^2(5g + g) + 17 --) 16(5g + g) + 17 --) 80g + 16g + 17 --) 96g + 17; answer is c.
13.3^2(5x + 2x) - 24 --) 9(5x + 2x) - 24 --) 45x + 18x - 24 --) 63x - 24; answer is c.
14. 2x + 6x = 56 --) 8x = 56 --) x = 7; answer is c.
15. 20 + (1.5h - 1.5) = 32; the answer is a.
Hope this helps :)
