Ilearned this so long ago & i don’t remember how to do it. plz

#12)

Average rate of change =[f(2) - f(1)] / (x2 - x1)

In this case

Average rate of change =[g(3) - g(-2)] / (x(3) - x(-2))

= (12.5 - 400)/(3 - (-2))

= - 387.5 / 5

= - 77.5

Average rate of change = -77.5

answer: no

step-by-step explanation:

you are only given the cost not the amount of pounds.

the answer is simply just 6n add the two together as they have an n