Answer: 3.085% per year
Step-by-step explanation:
P = 100000
F = 12*12000 = 144000
t = 12
144000 = 100000(1 - r)¹²
144000/100000 = (1 - r)¹²
1.44 = (1 - r)¹²
log 1.44 = log (1 - r)¹²
log 1.44 = 12 log (1 - r)
0.158362 = 12 log (1 - r)
0.158362/12 = log (1 - r)
0.013197 = log (1 - r)
10⁰.⁰¹³¹⁹⁷ = 1 - r
1.03085 = 1 - r
r = 1.03085 - 1
r = 0.03085
r = 3.085 %
Answer:
+ 2 for the top row and -10 from bottom row
-2 + 2 = 0
0 + 2 = 2
2 + 2 = 4
15 - 10 = 5
5 - 10 = -5
-5 - 10 = -15