Chapter 4 Test Bonus Questions

Front

What is the cost function for Plan A of Netflix's streaming service?

Back

Cost = $2 per movie viewed + $10 flat rate per month.

Front

What is the cost function for Plan B of Netflix's streaming service?

Back

Cost = $4 per movie viewed + $8 flat rate per month.

Front

How do you write an inequality to compare costs of two plans?

Back

Set the cost of Plan B greater than the cost of Plan A: 4x + 8 > 2x + 10.

Front

What is the solution to the equation 3x - 2(x - 4) + 7 = 22?

Back

x = 7.

Front

What does the inequality x ≥ 75 represent in the context of Sally's shopping?

Back

Sally will get free shipping if she spends $75 or more.

Front

What group of numbers satisfies the inequality 6 ≤ x < 10?

Back

The numbers 6, 7, 8 satisfy the inequality.

Front

What is an inequality?

Back

An inequality is a mathematical statement that compares two expressions, showing that one is greater than, less than, or equal to the other.

Front

What is the difference between a function and a relation?

Back

A function is a specific type of relation where each input has exactly one output.

Front

What does it mean for a number to satisfy an inequality?

Back

It means that when the number is substituted into the inequality, the statement holds true.

Front

How do you solve a linear equation?

Back

Isolate the variable on one side of the equation using inverse operations.