-3x=15
Divide both sides by -3 to get + x
-3x/-3= 15/-3
Cross out -3 and -3 , divide by -3 and then becomes 1*1*x= x
x=-5
Answer: x= -5
Volume=10×1.5×2.5=37.5 cu ft. Weight of contents=37.5×0.64=24 pounds.
Answer:
The interest earned by Jessica after a year and a half of investment is $ 33.75.
Step-by-step explanation:
First, we must establish that simple interest is one in which interests are not added to capital. Therefore, interest in this case will always be calculated on the initial basis of $ 900.
That said, if Jessica invested $ 900 in her account, and said account grants a simple annual interest of % 2.5 per year, that account grants an interest of $ 22.5 per year (since 900 x 2.5 / 100 = 22.5). Therefore, to know the interest obtained in a year and a half, we must perform the following calculation:
22.5 (annual interest) + 22.5 / 2 (half-year interest) = X
22.5 + (22.5 / 2) = X = 33.75
Therefore, the interest obtained by Jessica after a year and a half of investment is $ 33.75.
