A negative times a negative is a positive. I am not sure if that's the question, but hopefully that helps if it was.

We're given that
and
, and want to find
.
By the chain rule, we have

and


Then

(because the point
corresponds to
)

Answer:
Q1 d, Q2 c, Q3 d
Step-by-step explanation:
Q1
g(x)=-3x+1
g(x)=16 means that
-3x+1=16 subtract 1 from both sides
-3x=16-1 combine like terms and divide both sides by -3
x=-15/3=-5
Q2
g(x)=3x²+4x-1
g(2) means that x=2 so substitute
g(2)=3*2²+4*2-1=12+8-1=19
Q3
domain are the x values
range are the y values
18 what is this for exactly..?