#3 is not a function because there are two answers for one out put
#4 is a function because it is a straight line
Answer:
B)y = 3x^2 - 3x-18
Step-by-step explanation:
y = (3x – 9)(x + 2)
y = 3x*x+3x*2-9*x-9*2
y = 3x^2 +6x-9x-18
y = 3x^2 - 3x-18
The answer is B. x = 65, y = 10.
The correct answer is a 360