Subtract the sine term and take the square root.

Answer:
32 because 2 divided by 2 is 0 and 64 divided by 2 is 32
If Terrence is skating at a constant rate then the answer to b would be it is a function. On a You say how close he is to the motion detector in feet during the second he says. Since the seconds is on the first one 0 then he is 0 feet. Then 2, 4, 6, 8. Because every second he gets to feet colser. On c, the independent variable is how time, and the dependent variable is distance from motion detector. The independent variable is what you change and the dependent variable changes because of the independent variable. Hope this helped!
Freya begins started with 200 yards.
Freya then increased her distance by adding five yards a day for two days.
x = 200 + (n - 1)5.
<em>[x = The distance Freya sprints on day 21]</em>
x = 200 + (21 - 1)5
x = 200 + (20) 5 = 300 yards