A copy machine makes copies at a constant rate. The machine can make 80 copies in 2 1 half minutes. Write an equation to represent the number of copies, , that can be made over any time interval in minutes, . n=___?

What are the values of each variable in the diagram below?

Find the volume of the solid obtained by rotating the region enclosed by the curves y=1x and y=7^-x about the x-axis. (use symbolic notation and fractions where needed.) volume =

If the car had not hit the fence, how much farther would it have skidded? solve the skid-distance formula to find the extra distance that the car would have traveled if it had not hit the fence. round your answer to two decimal places. note that unit conversion is built into the skid distance formula, so no unit conversions are needed.