Marc has 45 CDs in his collection, and Corinna has 61. If Marc buys 4 new CDs each month and Corinna buys 3 new CDs each month, after how many months will Marc and Corinna have the same number of CDs?

Which properties do you use to solve y₂ - y₁ = m(x₂ - x₁) for x₂

How many solutions does each equation have?

If pv=nrt, what does r equal?

Write and solve an inequality for the statement below.

3 less than the product of 6 and a number n is greater than -18

Solve and graph the inequality:

3(x -2) > 2x