The function b (n) = 6n represents the number of light bulbs b (n) that are needed for n chandeliers. How many lightbulbs are needed for 15 chandeliers?

90 lightbulbs

2 lightbulbs

96 lightbulbs

80 lightbulbs

The answer is 90 lightbulbs.

b (n) - the number of light bulbs

n - the number of chandeliers

The function is b (n) = 6n

If n = 15, then:

b (15) = 6 · 15 = 90

Therefore, the number if light bulbs needed for 15 chandeliers is 90.