He potential energy, p, in a spring is represented using the formula p = kx2. lupe uses an equivalent equation, which is solved for k, to determine the answers to her homework.

which equation should she use?

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?

One positive number is 9 more than twice another. if their product is 95, find the numbers

Fanny mendelssohn manages all the magazines and paperback books at a local grocery store. she prices many paperbacks to sell at $7.99. the cost to the store is $5.29. what is the markup rate on a paperback book, based on its cost?