Algebraic Expressions and Word Problems

The video tutorial addresses common algebraic problems involving social media posts and cost calculations. It covers defining variables, writing expressions, and performing arithmetic operations to solve problems related to Facebook status updates, Instagram picture posts, and the cost of cat food for a humane society. The tutorial also explains how to apply sales tax to total costs.

What is the main purpose of the video tutorial?

• To provide a detailed explanation of each topic.

• To discuss the history of mathematics.

• To introduce new mathematical concepts.

• To solve complex algebraic equations.

How many status updates does Ashley post per day?

• 38

• 17

• 21

• 4

What is the algebraic expression for the combined total number of posts by Ashley and Roberto?

• 17D - 21D

• 21D - 17D

• 17D + 21D

• 38D

What is the difference in the number of posts between Roberto and Ashley?

• 17 posts

• 21 posts

• 38 posts

• 4 posts

How many pictures do Tommy and Elizabeth post on Instagram each day?

• 7

• 26

• 11

• 15

After seven days, how many total posts would Tommy and Elizabeth have?

• 52

• 26

• 182

• 210

What is the cost of one bottle of kitten formula?

• $1.50

• $3.99

• $2.50

• $4.99

How much does one can of wet cat food cost?

• $1.50

• $3.99

• $2.00

• $4.00

What is the total cost before tax for 30 bottles of kitten formula and 120 cans of wet cat food?

• $400.00

• $250.00

• $299.70

• $350.00

How does the algebraic expression change when a 7% sales tax is added?

• Add 7 to the expression

• Multiply the entire expression by 1.07

• Subtract 7 from the expression

• Divide the expression by 1.07