NEED HELP ASAP PLZ
which of the following are rational numbers select three that apply
Square root 3
Square root 9
Square root 5
Square root 4
Square root 8
Square root 1

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)

1.based of the diagrams what is the the value of x? 2.how would you verify your answer for x

Melissa is purchasing a $160,000 home and her bank is offering her a 30-year mortgage at a 4.9% interest rate. in order to lower her monthly payment, melissa will make a 20% down payment and will purchase 3 points. what will her monthly mortgage payment be? a. $645.98 b. $650.46 c. $662.93 d. $606.69