The area of a rectangle is 2r^2 + r - 1. The length is 2r - 1. What simplified expression represents the width?

Experts agree the planet can produce enough food for 11 billion people. The EARTH today has 7.6 billion people. 7.6 is what % of 11?

A local grocery store tested spinach samples for E coli bacteria using two different tests. The first test has a 94% probability of giving accurate results, while the second test is accurate 89% of the time.

Use any model you choose to find the quotient. 1/5 divided by 3

What percent of 63.8 is 37.8?

What is y=3-2x-x^2 in standard form

Jimmy found five numbered cards, 1, 2, 3, 4, and 5 under his brother's bed. In how many ways can he arrange the cards to form a five-digit number?

Is 9x to the power of 2 and 5x like terms?

Which of the following are independent pairs of events? Check all that apply. A. Flipping two coins and having one show a head and the other show a head B. Being sneezed on and catching a cold C.

What is the equation of the line that is perpendicular to and has the same y intercept as the given line?

5x + 20 = y 5x + 20 = 70 5x = 50 x = 10 Jack has a business mowing lawns and charges a flat fee of $20 per yard, plus an additional $5 an hour. He wants to make sure that he makes at least $70 doing yard work for a client with a very large yard.