49-Cent Stamps and Equations

The video tutorial explains how to solve a problem involving Monica's purchase of stamps. It sets up the problem by defining variables and formulating equations based on the given conditions. The tutorial then demonstrates solving these equations step-by-step, simplifying expressions, and isolating variables. Finally, it verifies the solution by checking if the calculated values match the total cost of the stamps.

What was the total amount Monica paid for the stamps?

• $7.47

• $6.47

• $5.47

• $8.47

How is the number of 49-cent stamps related to the number of 2-cent stamps?

• Twice the number of 2-cent stamps

• Equal to the number of 2-cent stamps

• Three more than twice the number of 2-cent stamps

• Three less than twice the number of 2-cent stamps

What expression represents the number of 49-cent stamps?

• 2s + 3

• 3s + 2

• 2s - 3

• s + 3

What is the first step in simplifying the equation?

• Combine like terms

• Distribute 49

• Subtract 147

• Divide by 100

After distributing, what is the expression for the left side of the equation?

• 98s + 49

• 100s + 49

• 98s + 147

• 100s + 147

What operation is used to isolate the variable term 100s?

• Multiply by 100

• Subtract 147

• Add 147

• Divide by 100

What is the value of s after solving the equation?

• 8

• 7

• 6

• 5

How many 49-cent stamps did Monica buy?

• 12

• 15

• 13

• 14

What is the total value of 15 49-cent stamps?

• 735 cents

• 745 cents

• 725 cents

• 715 cents

What is the final step to verify the solution?

• Check the variable value

• Check the expressions

• Check the total cost

• Check the number of stamps