To compare ratios, write them as fractions. The ratios are equal if they are equal when written as fractions.
6000 is the correct answer
3x-5 < ( with line underneath the < sign) 21
B. -29
6.5(22.4 - 6.8) = 101.4
.7(48) - 15) = 18.6
101.4 + 18.6 = 120
120 - 29 = 91