Use factoring to solve

x^2-4x-=0

Acircle has a radius of 5/6 units and is centered at (3.6, 7.8) write the equation of this circle

Louise measured the perimeter of her rectangular scrapbook to be 154 cm. if the scrapbook is 45 cm wide, how long is the scrapbook?

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