Answer:
0=2(x-1)^2
Step-by-step explanation:
We can determine how many solutions a graph has by how many times it touches the x axis, or the horizontal axis.
The first graph doesn't touch the x axis, therefore it has no real solutions.
The second graph touches the x axis twice, so it has 2 solutions.
The third graph touches the x axis twice, so it has 2 solutions.
The fourth graph touches the x axis once, so it has 1 solution.
Therefore, the graph 0=2(x-1)^2 has 1 real solution.
a) 13000 divided by 2 is 6500, which was the population 10 years ago. 6500 divided by 2 is 3250, which was the population 20 years ago. 3250 divided by 2 is 1625, which was the bird population 30 years ago. 25 is halfway between 20 and 30, and 2437.5 is halfway between 3250 and 1625, so I would say that 2437.5 is the answer.
b) Well 13000 times 2 gives you 26000, which would be in ten ears, and halfway between 13000 and 26000 is 19500, which gives you the bird population in five years. :-)
20 because radius times height will give you the surface area of the shape
<span>the change get's to the nearest dollar would be your answer</span>