The answer is A, B(4, 4) and D(4, -3).
Hope I helped!!!! :D
Multiply top equation by -2, then add equations so b drops out....solve for a...plug in a to get b
A + b = d+c
<span>a - b = e - c </span>
The b and c cancel out.
<span>2a = d+e </span>
<span>a = (d+e)/2 </span>
The answers are as follows:
Box 1) D
Box 2) .02D
Box 3) D + .02D
Answer:
880 minutes
Step-by-step explanation:
cost = 0.05(per minute) + basic fee
y = 0.05x + 15
59 = 0.05x + 15
subtract 15
44 = 0.05x
divide by 0.05
x = 880
