Question

Question 1 (Multiple Choice Worth 1 points)



Let f(x) = x2 - 3x - 7. Find f(-3).

11

8

-7

-10

Question 2 (Multiple Choice Worth 1 points)



Let f(x) = x2 - 16. Find f-1(x).

4square root of x

±square root of x plus 16

x squared over 16

1 over quantity of x squared minus 16

Question 3 (Multiple Choice Worth 1 points)



Let f(x) = 2x - 6 Solve f-1(x) when x = 2.

-5

4

-2

7

Question 4 (Multiple Choice Worth 1 points)



Let f(x) = 2x + 2. Solve f-1(x) when x = 4.

1

3

4

10

Answer 1

1.f(-3)=(-3)^2-3(-3)-7
=9+9-7
=11

2. 4 square root of x
square root of x plus 16
x squared over 16
1 over quantity of x squared minus 16


3. Start with y = 2x - 6
Switch variables to get x = 2y - 6
Solve for y to get y = (1/2)(x+6)
Your inverse function is f^-1(x) = (1/2)(x+6)
and f^-1(2) = (1/2)(2+6) = 4

4. f(x) = 2x + 2
assuming you mean inverse:
f-1(x) = (x - 2)/2
f-1(4) = (4-2)/2 = 1

Answer 2

@dantheman26

Answer 3

Hope I helped XD

Answer 4

THANK YOU!!!!!