Answer:
8
Step-by-step explanation:
Solution :
It is given that :



So, 


The relative change is then,




This means that after 5 weeks, the revenue from the DVD sales in $563 with a rate of change of $70 per week and the increasing at a continuous rate of 12% per week.
It would increase the average, just by a bit.
See the attached figures.
The area of this trapezoid = 576
cm²
7B+5Y=487B+1Y=40Subtracting Eqn 2 from 1 we get 4Y=8so Y = $2 and X=$38/7