The volume of helium in a balloon is modeled by the function
y = -1.1x^3 + 3x^2 + 1, where x is
the number of seconds after the helium tank is turned on. What point on the graph represents the volume of helium in the balloon just before the tank was turned on?
To find the point on the graph that represents the volume of helium in the balloon just before the tank was turned on, we need to find the value of y when x is 0.
Plug in x = 0 into the function y = -1.1x^3 + 3x^2 + 1:
y = -1.1(0)^3 + 3(0)^2 + 1
y = 0 + 0 + 1
y = 1
Therefore, the point on the graph that represents the volume of helium in the balloon just before the tank was turned on is (0, 1).