Unit Test Answers

What is the inverse of the function f(x) = x +3?

A 2-column table with 9 rows. The first column is labeled x with entries negative 8, negative 6, negative 4, negative 2, 0, 2, 4, 6. The second column is labeled f of x with entries negative 16, negative 8, 0, 8, 16, 32, 64, 128.

Consider the function represented by the equation x – y = 3. What is the equation written in function notation, with x as the independent variable?

Analyze the graph of the function f(x) to complete the statement.

On a coordinate plane, a red line, labeled g of x, begins on a negative slope, crosses the x-axis at (negative 2, 0), the y-axis at (0, negative 2), and crosses the x-axis on a positive slope at (2, 0). A straight blue line with a negative slope, labeled f of x, crosses the y-axis at (0, 2) and the x-axis at (2, 0).

Mia jogs 3 kilometers in 20 minutes. There are about 0.6 miles in a kilometer. What is Mia’s approximate speed in miles per minute?

Karl has stamps in his desk drawer. The possible combinations of stamps are shown below.

Karl rides his bicycle 120 feet in 10 seconds. How many feet does he ride in 1 minute?

A sequence is defined by the recursive function f(n + 1) = f(n) – 2.