Determine whether each system has one solution, no solution, or infinitely many solutions. 1.) -x -y=2. y=x-2. 2.) x+y=1. x+y=-3. 3.) x+y=5. y=-x+5.

Gretchen is setting up for a banquet. she has 300 chairs and needs to distribute them evenly among t tables. how many chairs should she put at each table? write your answer as an expression.

What is the solution of log2  (3x  -  7)  =  3? 4 5

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).