How much of a radioactive substance must be presented to decay to 40 grams in 9 years if the half-life of the substance is 4.6 years?

For a fund-raising activity, the student council rented a popcorn machine for $50 per day. they plan to sell the popcorn for $1.50 per bag. it cost $0.50 to produce one bag of popcorn.

1/4 of an inch represents a foot what is the unit rate inches per foot 1/8 1/4 2 1/2

Bethany added a decorative border across the top of each wall of her kitchen. A diagram of her kitchen is shown below. She used a total of 62 feet of border. What is the length in feet of the unlabeled wall?

Write 0.27227222722227 ... as a fraction

A shoe store donated a percent of every sale to hospitals. The total sales were $7,150 so the store donated $286. What percent of $7,150 was donate to the hospitals

Lewis needs 1/8 quart of paint to cover 10 square yards. How many square yards can he paint with 4 quarts of paint?

It is recommended that you have 8 servings of water per day. A serving of water is about 237 mL. If Carmelo drank 7 servings, about how many liters of water did he drink?

What is 5,000 in scientific notation?

Which of the following is correct set notation? (1,2,3) 1,2,3 {1,2,3} none of the above

The kindergarten teacher wants to divide 1/2 of her classroom into 5 equal sections for stations