Answer:

Step by step explanation:

(-2)^2 actually equals 4
-2×-2=positive 4. :)
Answer: 
Step-by-step explanation:
For this exercise you need to remember the following Trigonometric Identity:

You must observe the figure given in the exercise.
You can notice that the given triangle EFG is a Right triangle (Right triangles are defined as those triangles that have an angle that measures 90 degrees).
So, you can identify in the figure that:
So, knowing these values, you can substitute them into
and then you must evaluate (Remember to round the result to the nearest hundreth).
Therefore, through this procedure you get:

2,149,999.99 I dont know if it's right but this is what I got haha
Answer:
x= 15 songs were downloaded
Equation: $0.99x+$25=39.85