the layout of a classroom is plotted on a coordinate plane. the teacher's desk is represented as a rectangle with coordinates (-5,3),(-3,3),(-3,1) and (-5,-1). what is the perimeter of the desk? each unit represents 1 foot (marking brainliest please help!)

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.

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form

Consider the expression below. 9 + 4(x + 2) – 3.1 select the term that best describes "3" in the given expression. o a. coefficient variable exponent constant