Solve the system of equations by substitution. What is the solution for x?

2x + y = 1

4x + 2y = - 2

How do you simplify 3/10

A certain number of friends are waiting in line to board a new rollercoaster they can board the ride in 5040 different ways. How many friends are in line?

The term number 700 in a geometric sequence is 20. If the common ratio of the sequence is 0.25, what is the term 699

Solve the following compound inequality. - 6x + 8 < 38 AND 3x - 2 < 13

A box is 13in high, 18in long, and 8in wide. what is the longest poster you could fit in the box

6,8,10,12 arithmetic or geometric

There is a number, which has five digits 5abc9. If this number is the square of an integer, where a, b, c each represent a missing digit and all five digits are different, then find this number.

Andy's backpack weighs 2 1⁄4 pounds. If he removes a book that weighs 13 ounces, how much does the backpack now weigh?

Amy can run 1/10 mile per minute. How many minutes will it twke Amy to run 3 miles?

A company manufactures and sells x monitors each hour. The hourly price and cost equations are: p=500-0.8x C (x) = 4x+6000 a. Given that R (x) = xp, find the revenue function, R (x)