If the sum of radius and height of a cylinder is 21cm and curved surface area 616cm find total surface area of cylinder

Amuffin recipe, which yields 12 muffins, calls for cup of milk for every 1 cups of flour. the same recipe calls for cup of coconut for every cup of chopped apple. to yield a batch of 30 muffins, how much flour will be needed in the mix?

What are the solutions to the equation 4x2+3x=24-x

The graph of h(x)= |x-10| +6 is shown. on which interval is this graph increasing