Question

The graph shows how many cups of food are in an automatic pet feeder after given numbers of days. Which statement is correct?
A. Every day, the amount of food decreases by 3/4 cups.
B.Every 3 days, the amount of food decreases by 4 cups.
C. Every 4 days, the amount of food decreases by 3 cups.
D. Every 3/4 -day, the amount of food decreases by 1 cup.

Answer 1

notice that in 4 days cup decreases from 8 to 5 (3 less), and this ratio is constant, in 8 days, 6 less cups

Answer 2

the ratio is -3/4 in one day

Answer 3

A and C are correct