F (x) = 70n-400 how many students must be enrolled in the class for the instructor to make a profit?

Question

Stacy Dixon

Mathematics

20 March, 20:35

F (x) = 70n-400 how many students must be enrolled in the class for the instructor to make a profit?

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Answers (1)

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Marcelo Griffith · Answer 1

6 students must be enrolled.

Step-by-step explanation:

F (x) must be greater than 0. Thus, 70*n-400 must be greater than 0.

70*n - 400 >0

70*n > 400

n > 400/7

n > 5.7

n >6