Some are
y-2=-3x
y+3x=2
3x=2-y
Answer:
8793
Step-by-step explanation:
9×1013= 9117
3×108=324
9117-324= 8793
28x+20y =14*4 = 56
28x + 21y = 9*7 =56
=> y=0, x = 2
Answer:
$ 50,340.97
Step-by-step explanation:
From the above question, we can deduce that we are to find the Initial amount invested which is also called the Principal.
The formula to find Principal in a compound interest question is:
P = A / (1 + r/n)^nt
Where:
A = Total Amount obtained after invested = $80,000
r = Interest rate = 3.1% = 0.031
n = number of times interest in compounded = Quarterly = 4
t = time in years = 15
P = $80,000/(1 + 0.031/4)^4 × 15
P = $80,000/(1 +0.00775)^60
P = $ 50,340.97
Hence, James would have to invest $50,340.97 today to have $80,000 in 15 years.
