Question

The average cost per person of attending an online class depends on the number of people attending. If 20 people attend, the web host charges $10 per person. If 26 people attend, the web host charges $6.25 per person. If 35 people attend, the web host charges $4 per person. Which table represents the inverse of this function?

Answer 1

The inverse swaps inputs and outputs. The original pairs are (20, 10), (26, 6.25), (35, 4), so the inverse pairs are

(10, 20), (6.25, 26), (4, 35).

Thus the correct table has cost values 10, 6.25, 4 in the first column and corresponding numbers of people 20, 26, 35 in the second.