Answer:
i don't know sorry
Step-by-step explanation:
Answer:
x = 45
Step-by-step explanation:
The 3 angles of a triangle add up to 180
<a + <b + <c = 180
substitute what you know
55+ 80 + <c = 180
combine like terms
135 + <c = 180
subtract 135 from each side
<c = 180 -135
<c = 45
x = 45
A function can only have one y value for every x value.
the answer is D
Answer:
Correct choice is A
Step-by-step explanation:
The range of the function are all possible values which variable y can take.
From the given diagram you can see that the variable x changes from -4 to the 9. So the domain of the function is 
Also the variable y takes its values from -4 to 8. Thus, the range is 
(4x2 – 4x – 7)(x + 3)
(4x2 – 4x – 7)(x) + (4x2 – 4x – 7)(3)
4x2(x) – 4x(x) – 7(x) + 4x2(3) – 4x(3) – 7(3)
4x3 – 4x2 – 7x + 12x2 – 12x – 21
4x3 – 4x2 + 12x2 – 7x – 12x – 21
4x3 + 8x2 – 19x – 21