The ratio is 91/120 because 91 is only divisible by 1, 7, 13, 91 and 120 is not divisible by 7, 13, or 91 so you cannot reduce this ratio
17 x 2 = 34 boxes of crayons per year
8.98 x 34 = $305.32 for the year
The correct expressions are
-8.8
11(-2)
-6.7
