Final answer:
The unit rate of price per foot for a 20-foot chain bought for $36.50 is $1.825, which rounds to $1.83 per foot.
Step-by-step explanation:
To calculate the unit rate of price per foot for the 20-foot chain that was bought for $36.50, we need to divide the total price by the number of feet.
If we have a chain that is 20 feet long and the total price is $36.50, the calculation will be:
Unit Rate = Total Price / Number of Feet
Unit Rate = $36.50 / 20 feet
Unit Rate = $1.825 per foot
To round the unit rate to the nearest cent, it would be $1.83 per foot as $1.825 rounds up to $1.83 when rounding to the nearest cent.
This unit rate allows you to understand the cost for each individual foot of the chain, which can be useful for comparing prices or calculating costs for different lengths of the same type of chain.