Question

Kiki made $570 last week for 40 hours of work. This week she worked 36

hours and made $513. Is this a proportional or non-proportional relationship?


A. Proportional; the constant of proportionality is $22.80/hour
B. Proportional; the constant of proportionality is $14.25/hour
C. Non-proportional; the rate of change is $14.25/hour
D. Non-proportional; the rate of change is $18.47/hour

PLEASE HELP THIS IS DUE AT 7:00 CST!!​

Answer 1

B

Explanation:

Relationships are proportional if they represent the same relationship. One way to see if two ratios are proportional is to write them as fractions and then reduce them. In this case, you have

40/570 = 36/513

If these outcomes are the same, they are proportional. For this problem you would get 14.25 for each side, making the correct choice, B.