Write the following as algebraic expressions: After a teacher handed out m packs of notebooks with c notebooks in each pack, he has 13 notebooks left. How many notebooks did he have originally?

When Lori was born she weighed 7 1/2 pounds. There are 16 ounces in every pound. What was Lori's weight in ounces? Solve this problem any way you choose.

Emily had 30 cookies to bring to school for her birthday. Three students wanted two cookies each. Then, a new student came to the school that day and he wanted three cookies. Then, one of the three kids gove their two cookies back.

Martin salary increased from $680 per week to $850 per week. Express the increase as a % of his original salary.

Identify parts of expression

A water balloon is 5 feet above the ground when Sally launches it into the air. Use the quadratic equation 0 = - t2 + 4t + 5 to find how much time, t, it takes for the water balloon to reach the ground.

Robert ran 1 km and khali ran 400 who ran farther explain how you know

What is the slope intercept form of (4,-3) slope of 1/4

The volume of a sphere is given by V = (4/3) πr3, where r is the radius. what is the formula in terms of r

Ally and Beth are at the grocery store. Ally buys a container of milk for $4 and 4.75 pounds of apples. Beth buys a box of cereal for $3 and 5.55 pounds of apples.

2u+7u=81 simplify your answer as much as possible