Solve the following system of linear equations by graphing.

3x-2y=12

7x+2y=8

How many students read at least 6 books?

A roller coaster begins at 90 feet above ground level. Then it descends 105 feet. Find the height of the coaster after the first descent.

Explain why this number 523.691 has different value

If i = prt, if p = 8000, r = 0.6 and t = 1 what is the value of i

In a quiz contest, Mary answers 90% of the questions correctly without any additional clues from the quiz coordinator. The randomly generated numbers below simulate this situation.

A rectangle contains 17 identical grey squares and in the whole rectangle there are 50 squares what percent is the rectangle shaded

Is 18 a polynomial? Explain your reasoning

Simplify the next two expressions 1. 2x + 5 (3x - 2) - 10x - 30 2. 10x - 23 + 40y + 23 - 10 - 2x - 10y

Rita has a collection of 96 coins consisting of nickels, dimes, and quarters. The number of dimes is 2 more than one third the number of nickels, and the number of quarters is twice the number of dimes.

If the scale used on the blue print is 2in = 3ft. what is the measure of the door that is 5in on the blue