Question

how do I solve this problem (I did the graph)

Answer 1

C = - 1/2t + 6
The equation usually looks like this

C = k*t + n

If t = 0 than

C = n (from the table we see that C is 6 if t = 0) than

N = 6 too

For t = 2 and c = 5 we have the equation

5 = 2k + 6
2k = -1
K = -1/2