What expression can be used to calculate the rate per minute at which the air freshener dispenses sprays?

You didn't give any answers, but, I hope this will help you out a bit:

for example, if the air freshener sprays 3 times every 20 minutes,

here are our points:

(20,3), (40,6), (60,9), (80,12)

lets take the second and third point to find the slope.

3/40 would be the slope.

answer: sensy

step-by-step explanation:

answer:   (s+1)(s+4)

step-by-step explanation:

factor s2+5s+4

s2+5s+4

=(s+1)(s+4)