I'm guessing you would need the formula for area of a circle. Find the whole dimensiosn of that circle and then subtract what you need to find the shaded part. That make sense?
Place one point 7 units above D and one 7 units below D. So at (-4,8) and (-4,-6)
Answer:
Company A: $530; Company B: $610; Difference: $80
Step-by-step explanation:
Company A:
12(40) = 480 + 50 = 530
Company B:
15(40) = 600 + 10 = 610
Difference: 610 - 530 = 80
Hope this helped!