(This is for math) Select from the following options:
[] y-intercept
[] (1, 7.5)

1. The value after 7.5 years.
2. The amount of time it takes for the value to decrease by one half.
3. The value after one year.
4. The starting value.

Determine whether the following statements are true and give an explanation or counterexample. bold a. when using the shell method, the axis of the cylindrical shells is parallel to the axis of revolution. bold b. if a region is revolved about the y-axis, then the shell method must be used. bold c. if a region is revolved about the x-axis, then in principle it is possible to use the disk/washer method and integrate with respect to x or the shell method and integrate with respect to y.

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

There is an entrance to the computer room at point e which lies on ab and is 5 feet from point a. plot point e on the coordinate plane. find the distance from the entrance at point e to the printer at point e