42 times 2 because 84 divided by 24 equals 2. Also, 84 divided by 2 equals 24.

A=futurer amount
P=present amount
r=rate in decimal
n=number of times compounded per year
t=time in years
A=2500
r=0.05
n=2
t=2




divide both sides by [tex} 1.025^{4} [/tex]
2264.88=P
he should invest
$2264.88
Then 5 is ones and the 8 is hundrths