D. 3
F(x) is referring to y. The question is asking what x is when y is 4.
check the picture below.
so the playground is really just 3 rectangles and one triangle, now the triangle has a base of 8 and a height of 6. We can simply get the area of each figure, sum them up and that's the area of the playground.

Answer: -1
-2-3-(-4)
-5-(-4)
-1
Use the change-of-basis identity,

to write

Use the product-to-sum identity,

to write

Redistribute the factors on the left side as

and simplify to

Now expand the right side:

Simplify and rewrite using the logarithm properties mentioned earlier.





(C)
Answer:
1.27388535028
Step-by-step explanation:
Simply using the formulas