For the function f(t)=pe rt , if p=9 and r=0.09 then what is the value of f(9) to the nearest tenth

Louis wants to carpet the rectangular floor of his basement.the basement has an area of 864 square feet.the width of the basement is 2/3 it's length. what is the length of louis's basement

What is the value of the discriminant of the quadratic equation -2x = -8x + 8 and what does its value mean about thenumber of real number solutions the equation has?

Can someone plz me with 11,12,13 plz show work