Question

A catering company uses different functions to estimate the itemized costs for a party. The table below represents the included tip for wait staff as a function of the number of guests served. If the tip varies directly with the number of guests, which equation represents the relationship between the tip, t, and the number of guests, g?

Answer 1

a

Explanation:

Answer 2

#of guests waitstaff tip
10 18
20 36
30 54
40 72
50 90

If the tip varies directly with the number of guests, which equation represents the relationship between the tip, t, and the number of guests, g?
t = 1.8g t = g/18 g = 1.8t g = t/18

18/10 = 1.8
36/20 = 1.8
54/30 = 1.8

direct variation: t = 1.8g