You have to use Trigonometric ratios here. I'll help you with a question, and you try to do the other two.
a. You are given the hypotenuse, and told to figure out the opposite. The trigonometric function that deals with that is sin(x), which is opposite over hypotenuse. So:

Solve for y:

Simplify:

For these problems, you have to remember the ratios Sine, Cosine, and Tangent. An easy way is to make a mnemonic device. A good one that a lot of people use is SohCahToa. Which is Sine (Opposite, Hypotenuse), Cosine (Adjacent, Hypotenuse) and Tangent (Opposite, Adjacent). Remember trigonometry is just a glorified field of ratios of sides to angles. There are many more trigonometric ratios including inverse trigonometric ratios, reciprocal trigonometric ratios, and hyperbolic trigonometric ratios (which show up during differential calculus). But for now, focus on this. Haha.
Answer:

Step-by-step explanation:
The given function is

To find F(2), we substitute t=2 into the function.
This means that wherever we see t, we put 2

We multiply the exponent in the denominator to get:

We evaluate to get:

We now cancel the common factors to get:

How you do this is using the formula speed = distance/time. So this is 100/5 which is 20 meters a second. Using the conversion factor (can google "20 meters per second is how many mile") 20 meters a second = 44.7 miles per hour.
In conclusion, the answer you're looking for is D. 44.7 miles per hour.
Answer:
<em>9 < 37</em>
Step-by-step explanation:
4 + 5 = 9
9 = 37
9 < 37
<u><em>~ Lady Brain</em></u>
Answer:
3.50$ x 5.5 = 19.25 $
Step-by-step explanation: