Question

boris purchased 21.5 centimeters of wire for $17.20. find the unit price in dollars per centimeter. if necessary, round your answer to the nearest cent.

Explanation:

Step1: Define unit price formula

Unit price = $\frac{\text{Total cost}}{\text{Total length}}$

Step2: Substitute given values

$\frac{17.20}{21.5}$

Step3: Calculate and round result

$17.20 \div 21.5 = 0.8$

Answer:

$\$0.80$ per centimeter