What equation models the data in the table if d = number of days and c = cost? days cost 2 6 3 9 5 15 6 18 c = 3d c = d + 3d d = 3c c = d + 3

Step-by-step explanation:

Days  Cost

2          6

3          9

5         15

6         18

Now to find equation that models the given data we will use two point slope form.

Formula:

Substitute the values in the formula

where y denotes the number of days and x denotes the cost

Let us suppose d denotes the number of days and c denotes the cost

So, equation becomes:

Hence an equation models the data in the table is

So, option A is true.

15

step-by-step explanation:

21.4 i did it already for s1

step-by-step explanation: