At $1.50 per foot, what is the total cost of 20 feet?

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Multiple Choice

At $1.50 per foot, what is the total cost of 20 feet?

Explanation:
The main idea is multiplying a unit price by a quantity to get total cost. If something costs $1.50 per foot and you need 20 feet, multiply 1.50 by 20. You can compute 1.50 × 20 as (1.50 × 2) × 10 = 3.00 × 10 = 30. So the total cost is $30. You can also see this as $1.00 per foot for 20 feet plus $0.50 per foot for 20 feet, which is $20 + $10 = $30.

The main idea is multiplying a unit price by a quantity to get total cost. If something costs $1.50 per foot and you need 20 feet, multiply 1.50 by 20. You can compute 1.50 × 20 as (1.50 × 2) × 10 = 3.00 × 10 = 30. So the total cost is $30. You can also see this as $1.00 per foot for 20 feet plus $0.50 per foot for 20 feet, which is $20 + $10 = $30.

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