B, C, and D all have an x-value of 4.
Answer: The interest rate is .166%
Step-by-step explanation:
So what I did was divide $50(Amount at the end) by 6 (the number of months). Which would give me the amount of money he made per month ($8.333...). So then $8.333.../$5000(Total $) is .166...% (Interest rate)
X + y = -3
<u>x - y = 13</u>
<u>2x</u> = <u>10</u>
2 2
x = 5
x + y = -3
5 + y = -3
<u>- 5 - 5</u>
y = -8
(x, y) = (5, -8)
