We know that AC=8x-20 and B is the mid-point of AC
⇒ AB = BC =
⇒ BC =
⇒ BC = 4x-10
Answer:
72.50/100 X 80 = 58
total cost with mark down $58
a(n) = a(1) -3(n-1)
Step-by-step explanation:
it's the first one girl! :)
