(n+1)x 2=10
2n+2=10
2n=8
n=4
Positive because you will said that has the charged is about $2.50
D + q = 40
.10d +.25q= $7.75
d +q = 40
d =40-q
.10(40-q) +.25q= $7.75
4 - .10q + .25q =7.75
4 +.15q =7.75
4-4 +.15q =7.75-4
.15q= 3.75
.15q/.15 = 3.75/.15
q = 25
d =40-25
d = 15
Check
.10(15) +.25(25)= $7.75
1.5+6.25=7.75
7.75=7.75
The amount that will be in the account after three years is $1,254.00.
Using this formula
B = P+ ( P x R x T)
Where:
B=Amount ?
P=Principal=$1,200
r=Rate=1.5% or 0.015
T=Time=3 years
Let plug in the formula
B=$1,200+($1,200×0.015×3)
B=$1,200+$54
B= $1,254.00
Inconclusion the amount that will be in the account after three years is $1,254.00.
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brainly.com/question/20348538
