Amir wants to scale up a photo to create a poster for his room. the original picture is 6 inches in width and 4 inches in height. what will be the height of the poster if its width is 30 inches?

Diane owes $387 to her brother. if she debits her bank account $161.25 a month to pay him back, how many months will it take her to pay off the debt?

1. what is the measure of ∠abc? what is the measure of ∠abd?

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.