Bethany's mother was upset because bethany's text messages from the previous month were 218% of the amount allowed at no extra cost under her phone plan. her mother had to pay for each text message over the allowance. bethany had 5,450 text messages last month. how many text messages is she allowed under the phone plan at no extra cost?

Given right triangle xyz, which correctly describes the locations of the sides in relation to

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.

1. writing an equation for an exponential function by 2. a piece of paper that is 0.6 millimeter thick is folded. write an equation for the thickness t of the paper in millimeters as a function of the number n of folds. the equation is t(n)= 3. enter an equation for the function that includes the points. (-2, 2/5) and (-1,2)