It should be the second image on this list. I hope this helps! ^^
Answer:
4
Step-by-step explanation:
I assume that is supposed to be x squared. A perfect trinomial is the product of a perfect square, (x times a number) squared. With these trinomials, you can look at them as: ax squared times bx + c. When a is 1, the fastest way to get c to make a perfect square is to divide b by 2. In this case, it's 4/2 = 2. The last step is to square that number. 2 squared = 4.
Answer:
a. 2
b. 3
c. 3x^2+9x+15
d. 257
Step-by-step explanation:

When a function is written like that the value in the parenthesis is what you use to replace the x inside the expression.
a. f(-1) means the value of function "f" when x = -1

b. "f" when x = -2 + "g" when x = -2

c. multiply for 3 each function

d. "g" when x = 4 then "f" when x = g(4)

Number 1 is 744 because if you minus the percentage form the number of songs you get the 744
Answer:
x=63; y=27
Step-by-step explanation:
The straight line of the 117 is 180 and so you subtract 180 to 117 to get 63 which is x and then subtract 90 and 63 to get 27.