chala working alone, can paint a small house in 6 hours. genet can point the same house in 12 hours. if they work together, how long will it take them to paint the house ?

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.

What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?

What is the definition of exponential decay?