Question

Raffle tickets are being sold for a fundraiser. The function a(n) relates the amount of money raised to the number of tickets sold, n. 

It takes as input the number of tickets sold and returns as output the amount of money raised. 

a(n) = 3n – 15 

Which equation represents the inverse function n(a), which takes the money raised as input and returns the number of tickets sold as output?

Answer 1

Answer:

n (a)=a+15/3 apex

Step-by-step explanation:

Answer 2

The inverse function of a(n) = 3n - 15 is n(a) = 5 + a/3

How to determine the inverse equation?

We have:

a(n) = 3n - 15

Rewrite as:

a = 3n - 15

Add 15 to both sides

3n = 15 + a

Divide through by 3

n = 5 + a/3

Express as function

n(a) = 5 + a/3

Hence, the inverse function is n(a) = 5 + a/3

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