Question

1. lindsey records the number of minutes, m, it takes her to paint n posters in a table.

select the amount of time per poster it takes lindsey to paint.
15 minutes per poster
90 minutes per poster
45 minutes per poster
30 minutes per poster

Explanation:

Step1: Calculate the time per poster

We know that when \(n = 1\), \(m(n)=15\); when \(n = 2\), \(m(n) = 30\); when \(n=3\), \(m(n)=45\).
The formula for the rate (time per poster) is \(r=\frac{m(n)}{n}\)
For \(n = 1\), \(r=\frac{15}{1}=15\)
For \(n = 2\), \(r=\frac{30}{2}=15\)
For \(n = 3\), \(r=\frac{45}{3}=15\)

Answer:

15 minutes per poster