Twice the sum of x and y decreased by 21

A friend of yours is considering two cell phone service providers. provider a charges $120 per month for the service regardless of the number of phone calls made.

Solve the following word problem by using an equation and factoring. The sum of a positive number and its square is 20. What is the number? A. 1 B. 2 C. 3 D. 4 E. 5

Luna Ray has 5 orange picks and no green picks. You add some green picks so 1 in every 3 picks is orange. how many picks are ther now

A person is standing 200ft from a tower. She can see the top of the tower at a 42 degree angle of elevation. Her eyes are 5ft above the ground*. What is the height of the tower. Round your answer to the nearest foot A. 154ft B. 149ft C. 180ft D.

The company produced 150 monitors last week. After some of them were sold there were 48 monitors were left. What was the percentage decrease in the number of monitors of the company?

Melanie has $35.00 in her saving account and does cleaning in a neighbor's house for $15.00 per week. Sue has no money saved, but is mowing lawns at $20.0 each. If sue mows 1 lawn per week, how long will it take her to catch up with Melanie?

Assignment Active Identifying and Describing Population Change Organism Number per square meter (1991) Number per square meter (1994) Number per square meter (1997) Unionid mussels are native to the Hudson River in New York State.

From 2010 to 2015, a group of researchers conducted an experiment using two types of pain medication: pill A and pill B.

What is 855,000,000,000 in scientific notation?

How to do long division in 5th grade