1.) what is the vertex of the quadratic function y=x^2-4x-1
2.) what is the solution set for the quadratic function y=x^2-4x-21
3.) what are the solutions to the quadratic equation (x+9)(x-1)=0
4.) what are the zeros for the quadratic function f(x)=x^2+10+25

Refer to interactive solution 17.45 to review a method by which this problem can be solved. the fundamental frequencies of two air columns are the same. column a is open at both ends, while column b is open at only one end. the length of column a is 0.504 m. what is the length of column b?

The expression 1.01*1.005(^t) gives the amount of money, in thousands of dollars, in carter's savings account (t) years after he opens it. what does 1.01 represent in this expression?

Find the distance between (7,-6) and (-3,-9)