Evaluate xy - (-2z) for x=10, y=2, and z=-3.

a. 6

b. 26

c. 16

Chandra has 2 liters of a 14% solution of sodium hydroxide in a container. What is the amount and concentration of sodium hydroxide solution she must add to this in order to end up with 7 liters of a 34% solution?

Consider the quadratic equation ax squared + bx + c=0, where a, b, and c are rational numbers and the quadratic has two distinct zeros if one zero is rational which of the following is true of the other zero

Jacob earns 9.50 per hour for mowing his neighbor's yards. Last weekend Jacob earned $57. Which equation can be used to determine the number of hours, h, Jacob worked last weekend?

Which solid figure has 4 faces that are triangles and 1 face that is a rectangle?

Eric is adding water to a 60-gallon pool. The pool already has 12 gallons of water, and he wants to fill it to at least 27 gallons. The water flows at a rate of 6 gallons per minute.

A chef uses 3 and 3 fourth of flour and 1 and 5 eighth pounds of whole wheat flour for each batch of pasta she makes. One week she uses a total of 86 pounds of flour. How many batches of pasta does she make

Tommy buys a sweater that is on sale for 40% off the original price. The expression p - 0.4p can be used to find the sale price of the sweater, where p is the original price of the sweater.

Little mommy laughed and love baby doll list price: 49.99 price: 39.99 what percent is this toy on sale for?

How do I solve n x 43.50 = 435

Ewen has 48 white tiles and 16 blue tiles. The cost of each white tile was £2 and the cost of each blue tile was £4 work out the ratio of the total cost of the white tiles to the total cost of the blue tiles