A withdrawal from an account means taking money out of your account. That means whatever money you have in there becomes a smaller amount because you're subtracting money from the account.
So, to work out how much money Jan withdrew as a negative sum, you just have to look at how much she took out:
-25 - 45 - 75 = -$145
This means Jan took out $145 from her account, and we write it with a negative sign because it's money that's going to be taken away from whatever's in there.
The same thing applies to Julie:
-35 - 55 - 65 = -$155
Julie took out $155 from her account, so her withdrawals were -$155.
Therefore, your final answer for 24a. is -$145 and your answer for 24b. is -$155.
The formula for the volume of a cone is:

The formula for the volume of a cylinder is:

The formula for the volume of a triangular prism is:

The formula for the volume of a pyramid is:

The formula for the volume of a rectangular prism is:

X+3y=3
First add subtract the x
3y=-x+3
Then divide 3
Y=-1/3x+1
The slope of the line is -3/4