The amount of caffeine in our bodies cuts in half every hour (50%). Most energy drinks contain around 200 milligrams of caffeine. How many milligrams of caffeine are left after 3 hours?

Verify the identity: sin 4x = 2 sin 2x cos 2x

Five friends want to rent a go-cart track that costs $100. They already have $20. How much more does each friend need to contribute if they each contribute the same amount? Let x represent any unknown value in the problem. Select each correct answer

Factor completely x2 - 7x - 12

Find the volume of a sphere that has a surface area of 16 sq. in. A. (32/3) cubic inches B. 8 cubic inches C. (4/3) cubic inches

The Math Club is sponsoring a bake sale. If their goal is to raise at least $300, how many pies must they sell at $6.00 each in order to meet that goal? Write, solve, and graph an inequality that represents this situation.

Can the product of two irrational numbers be rational? Explain your answer and support with an example.

What is the domain of the given function? { (3, - 2), (6, 1), (-1, 4), (5, 9), (-4, 0) } x = - 4, - 1, 3, 5, 6 y = - 2, 0, 1, 4, 9 x = - 4, - 2, - 1, 0, 1, 3, 4, 5, 6, 9 y = - 4, - 2, - 1, 0, 1, 3, 4, 5, 6, 9

A landscaper wants to find the answer to the question "How much time do people in Raleigh, North Carolina, spend doing yard work in one week?" He asks the owners of all 120 houses in a Raleigh neighborhood.

In 2005, a social media website had 254,000 users. The number of users of the site increases by 12.5% each year. If t is the number of years after 2005.

An isometry preserves all all the following except