Average Grades and Inequalities

The video tutorial explains how to solve a problem where a class can earn a pizza party if the average quiz grade is at least eight. It guides through identifying keywords, formulating an inequality, and solving it to find the required grade. The tutorial concludes with a practice question.

What reward does the teacher offer if the class achieves a certain average grade?

• Extra credit

• A movie day

• A pizza party

• A field trip

What is the minimum average grade required for the class to earn the reward?

• 7

• 9

• 6

• 8

Which keyword indicates the type of mathematical operation needed?

• Sum

• Average

• Difference

• Product

What does the term 'at least' suggest in terms of inequality symbols?

• Less than

• Greater than

• Greater than or equal to

• Less than or equal to

What is the first step in calculating an average?

• Dividing values

• Subtracting values

• Adding values

• Multiplying values

How many students' grades are considered in the average calculation?

• 7

• 8

• 10

• 9

What variable is used to represent the unknown grade?

• g

• y

• x

• z

What operation is performed after adding all grades to find the average?

• Multiplication

• Addition

• Subtraction

• Division

What is the sum of the classmates' grades before adding the unknown grade?

• 60

• 62

• 64

• 66

What is the next step after simplifying the inequality to 62 + g / 9 ≥ 8?

• Add 9 to both sides

• Subtract 9 from both sides

• Divide both sides by 9

• Multiply both sides by 9