Let P = the PV (principal value).
n = 12, the monthly compounding interval
r = 2 = 0.02, the rate
nt = 20 months
The value if $20,000 after 20 months, therefore
P(1 + r/n)²⁰ = 20000
1.0339P = 20000
P = $19,344.86
Answer: PV = $19,344.86
In order to find out how much 450 yen was worth in U.S dollars, all you have to do is multiply 0.0075 by 450.
0.0075 * 450 = 3.375
Meaning that 450 yen at the time was worth approximately $3.40 when rounded.
By adding, subtracting, multiplying or dividing numbers
Answer: 
<u>Step-by-step explanation:</u>
Insert x = 13 and y = 1:
x² + 2hxy + 12y² = 0
(13)² + 2(13)(1) + 12(1)² = 0
169 + 26h + 12 = 0
26h + 181 = 0
26h = -181
