When the graph intersects the y-axis, it means it's x-coordinate is 0, or t = 0.
Hence, f(t) = 6 × 2^0 = 6.
y = 6 at y-intercept.
1. Not random. Because you are asking people if they like ICE CREAM in a ICE CREAM shop.
2. Not random. Because they are serving a small controlled group.
3. Not random. Because you go shopping at Publix because you like it.
4. Random. Because you don't choose who is home or not.
29.

As
,
.
This can be easily verified by looking at the graph (graph of a quadratic equation).
30.
The growth of a population is not linear, it's exponential.
31.
Exponential growth > polynomial, so
.
35.

The question is asking V(t) for t = 40.

36.
The point of symmetry of a quadratic equation
is at its vertice:



The line is x= 3.