Question

What equation models the data in the table if d = number of days and c = cost?

Days
Cost
2
16
3
24
5
40
6
48

d = 8c
c = d + 8
c = d + 8d
c = 8d

Answer 1

D)

The cost is a direct variation of the days by a factor of 8.

Answer 2

Correct option is:

c=8d

Explanation:

Days Cost

2 16=2×8

3 24=3×8

5 40=5×8

6 48=6×8

As we can clearly observe from the table above that if d is the number of days then the cost c is written as:

c=8d

Hence, Correct option is:

c=8d