Answer:
972pi
Step-by-step explanation
Equation of sphere volume = 4/3pir^3
4/3*9^3*pi = 972pi
-x^2+2x+3=x^2-2x+3 add x^2 to both sides
2x+3=2x^2-2x+3 subtract 2x from both sides
3=2x^2-4x+3 subtract 3 from both sides
2x^2-4x=0 factor
2x(x-2)=0
So x=0 and 2
Answer:
y=1/4x-1
Step-by-step explanation: