The height of a cylinder is twice the radius of its base. What expression represents the volume of the cylinder,
in cubic units?
4(pi)x2
2(pi)x
(pi)x2 + 2x
2 + (pi)x^3

The expression 42 plus 57 shows how much money nate spent at a store .which expression also shows how much money nate spend

Two blends of tea are mixed to make a blend that will be sold at the fair. black tea sells for $2.20 per pound and orange pekoe tea sells for $3.00 per pound. how much of each should be used to obtain a 4lb blend selling for $2.50 per pound?

Lee has $1.75 in dimes and nickels. the number of nickels is 11 more than the number of dimes. how many of each coin does he have?