The perimeter of a rectangle is 61 centimeters. The length is 4.1 centimeters longer than the width, w. Write and solve an equation to find the width of the rectangle.

If f(x)=2x+2and g(x)=x^3, what is (g•f)(2)

Achemist has 200 ml of a 10% sucrose solution. she adds x ml of a 40% sucrose solution. the percent concentration, y, of the final mixture is given by the rational function: the chemist needs the concentration of the final mixture to be 30%. how many milliliters of the 40% solution should she add to the 10% solution to get this concentration?

At a sale this week, a desk is being sold for $213. this is a 29% discount from the original price. what is the original price?