Amount= Deposit or initial amount ( 1+ percent increase) ^period of time
So Amount= 50(1+0.1)^3
= 50(1.1)^3
= 50(1.331)
=66.55
So she will have $66.55 in 3 years.
To find 33% of 1.45 we have to tranform 33% into decimal of traction
33% is 0.33 or

and multiply if by 1.45
so
0.33*1.45=0.4785
or
1.45*
Hello here is a solution :
<span>3x + 5y = 78 .... (1)
2x - y = 0 ... (2)
from (2) : y = 2x
in (1) : 3x+5(2x) =78
13x = 78
x= 6
but : y =2x y=2(6) = 12
answer : x=6</span>
The seven is in the thenths