**Answer:**

.5

**Step-by-step explanation:**

Just plug in the 30° into that equation.

<span>A(30°) = 16sin(30°)(cos(30°) + 1) </span>

<span> = 16(1/2)(1 + √3/2) </span>

<span> = Approx 14.9 in² </span>

<span>So A is the answer. </span>

**Answer:**

(x-y)(x-y-1)

**Step-by-step explanation:**

1.(x - y)² - x + y = (x - y)² - (x - y )

2.(x-y) [( x-y) - ( 1 ) ]

3.(x-y)(x-y-1)

**Answer:**

D. 66/2

**Step-by-step explanation:**

If you are trying to figure out what operation to perform first, then follow PEMDAS.

<em>P: Parenthesis</em>

<em>E: Exponents</em>

<em>M: Multiplication</em>

<em>D: Division</em>

<em>A: Addition</em>

<em>S: Subtraction</em>

<em />

So first we start with what is in parenthesis. Since there are two operations within the parenthesis, we start with the division first since it comes first in PEMDAS. This is why D. 66/2 is our best answer.

So you have 3, X&y in common so you have 3xy(3x + 4y) :)