13. The students in charge of the class booth at a carnival would like to earn $3 for every item they sell. They spent $55 for the materials to make the items. Solve the inequality 3x – 55 > 65, which represents how many items they need to sell to make a profit of at least $65.

Inequality shows the relationship between non equal number or expressions. Common signs used in inequality is the greater than (>), greater than or equal to (≥), less than (<), less than or equal to (≤).

Let x represent the number of item sold. Since $3 is earned per item, hence the total money earned is:

Total money earned = 3x

They spent $55 and also need to make a profit of at least $65, hence:

3x – 55 > 65

3x > 120

x > 4

Therefore they need to sell more than 4 items

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13. The students in charge of the class booth at a carnival would like to earn $3 for every item they sell. They spent $55 for the materials to make the items. Solve the inequality 3x – 55 > 65, which represents how many items they need to sell to make a profit of at least $65.​

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13. The students in charge of the class booth at a carnival would like to earn $3 for every item they sell. They spent $55 for the materials to make the items. Solve the inequality 3x – 55 > 65, which represents how many items they need to sell to make a profit of at least $65.