Part B For this activity, you'll analyze the motion of the marked spot on the skateboarder's leg. For each
dropdown labeled "cm" or "model cm," change the option to "Legs."
In each frame containing a plot or table, you can use the buttons at the top of the frame to choose
whether it shows a plot (graph) or a table. If it is showing a plot, you can select the y-axis label to
choose which measurement to plot. See how to change the graph and table options. e
5
Now look at the graphs for the horizontal and vertical displacement of the legs against time.
How do the two graphs, x vs. t and y vs. t appear? What can you say about the displacement of the
snowboarder?

im not to sure what it is

answer: at 24 february, 2014 the population gets twice of its initial population.

explanation:

since we have given that

the population for alpha city, t years after january 1, 2004 is given as

first we find out the initial population, i.e. t=0,

so, our quadratic equation becomes,

according to question, we have said that if the population has twice its initial population, then it becomes

so, time taken to reach this above mentioned population is given by

now, we know that time can't be negative so, we take t=9.149 years.

hence, at 24 february, 2014 the population gets twice of its initial population.

t = 1/400 h   ⇔ 0.0025 h ⇔ 9s ⇔ 0.15 m

any of the answers are correct.