What is the ratio of the area of rectangle a and rectangle b

Use the method of cylindrical shells to find the volume v generated by rotating the region bounded by the curves about the given axis. y = 7ex, y = 7e^-x, x = 1; about the y-axis

Sum of the interior angles of a pentagon

Which shows the first equation written in slope-intercept form? 1/2 (2y + 10) = 7x