Im pretty sure that you just take 128 devided by 98 and more the decimal to get the result of 13%
For #1 the answer would be ; " y = - x - 4 "
( you just have to plug in the given numbers to the slope intercept form )
There are 38 quarts in a 9.5 gallons since 9.5 × 4= 38.
12% of what number is 108
.12 x N = 108
.12/.12 x N = 108/.12
N = 900
Check
.12 x 900 = 108
108=108