Answer:
Step-by-step explanation:
The equation for the amount of money in an account after a certain amount is deposited and compounded after t years once per year is

Our A(t) = 33800, P = 4400, r = .075 and we are looking for t. Filling in:
and

Begin by dividing both sides by 4400 to get

The only way to move that t our from its current position as an exponent is to take the natural log of both sides and follow the rules for natural logs:

The power rule of natural logs says we can move that exponent down in front, giving us:

Divide both sides by ln(1.075) to get

Do this division on your calculator to get
t = 28.2 years
Number one is true glaciers do store 75% of the worlds fresh watet
The total space the water dispenser will take is equal to their volume.
Volume of one water dispenser = Length x Width x Height
So,
Volume = 4 x 8 x 14 = 448 in³
This is the volume on 1 dispenser. The volume of 3 dispensers will be = 3 x 448 = 1344 in³
This means, the 3 water dispensers will take 1344 cubic inches of space in Sid's refrigerator. So the correct answer is Fourth option