A salesperson ears a commission of $480 for selling $3000 in merchandise. Find the commission rate. Write your answer as a percentage.

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?

If (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9

Which of the following is the sum of 3 1/6 + 6 3/8?