Question

Select the correct answer(click the photo)

Answer 1

Answer:

B.

General Formulas and Concepts:

• Order of Operations: BPEMDAS
• Equality Properties

Step-by-step explanation:

Step 1: Define function

f(x) = 8x + 4

Step 2: Prep

1. Rewrite:                         y = 8x + 4
2. Swap x and y:               x = 8y + 4

Step 3: Find Inverse (Solve for y)

1. Subtract 4 on both sides:                    x - 4 = 8y
2. Divide both sides by 8:                       (x - 4)/8 = y
3. Rewrite:                                                 y = (x - 4)/8
4. Rewrite:                                                f⁻¹(x) = (x - 4)/8