Answer: The answer is B (if not C)
100 = 10^2
so 10^9 * 10^2 = 10^11 kilometers in 100 years
<span>1200 = 5000*4r
1200/20000 = r = .06 0r 6%</span>
Let us solve this system of equations by using the elimination method. Adding the 2 equations, we get
9x + 5y - 9x + 4y = -33 + 6
9y = -27
y = -3
Substituting this value of y in the first equation, we get
-9x + 4(-3) = 6
-9x - 12 = 6
9x + 12 = -6
9x = -18
x = -2
Therefore, x = -2, and y = -3. Hope this helps! If you have any questions, feel free to ask.
