Question

Question 1 (10 points)

For g(x) = -3x + 1 Find x if g(x) = 16
a
-47
b
14
c
16
d
-5
Question 2 (10 points)
If g(x) = 3x2 + 4x - 1 Find g(2) =

a
21
b
2
c
19
d
43

What are the domain and range of f(x)=19 ?

a
Domain: All real numbers greater than or equal to 19 Range: All real numbers
b
Domain: {19} Range: All real numbers
c
Domain: All real numbers Range: All real numbers greater than or equal to 19
d
Domain: All real numbers Range: {19}

Answer 1

Q1 d, Q2 c, Q3 d

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