C. 15 is the answer i believe
Answer: D.

Solving Steps :

Use the of Signs for Multiplication. Multiplying a negative and a positive equals a negative: (-) × (+) = (-)

Multiply both sides of the inequality by 3/4

Change the signs on both sides of the inequality and flip the inequality sign.
Answer:
You can do it
Step-by-step explanation:
Basically the Remainder theorem states that the remainder of dividing a polynomial P(x) by (x - a) is given by P(a).
So for example if we divide x^ 2 - 2x + 7 by x - 2 the remainder will be
2^2 - 2(2) + 7 = 7..
If the remainder is 0 then the divisor will be a factor of the polynomial. This is the Factor Theorem and can be used to test if a given polynomial has a factor x-a.
Answer:
The amplitude is 
Step-by-step explanation:
Let f(x) be a sinusoid function that has the following format:

Then b is the amplitude of the function
h is the vertical displacement of the wave
s is the phase angle
is the period.
In this problem 
Then 
Therefore the amplitude of the function is 
The amplitude is a measure of the vertical size of the sinx wave