Check all that are true: (check all that apply) To determine the unit rate, the rate should be rewritten with a denominator of one. The rate of minutes per mile for finishing a six-mile race in 51 minutes is 51 minutes per 6 miles. In the example of comparing two brands of shampoo, Brand A costs \( \$ 8.99 \) for 16 ounces and Brand \( B \) costs \( \$ 6.49 \) for 12 ounces. Brand-A has a lower cost per ounce than Brand B. The unit rate for painting a room that is 200 square feet in 4 hours is 800 square feet per hour.

To determine the unit rate, it's all about simplifying the numbers to make it easy to understand. For example, if you run 6 miles in 51 minutes, you can calculate the unit rate of minutes per mile by dividing 51 minutes by 6 miles, which gives you approximately 8.5 minutes per mile, making it clear how long each mile takes! When comparing the costs of shampoo, you can determine the cost per ounce by dividing the price by the ounces. For Brand A, \( \$ 8.99 \div 16 \) ounces is about \( \$ 0.56 \) per ounce, and for Brand B, \( \$ 6.49 \div 12 \) ounces is about \( \$ 0.54 \) per ounce. So, Brand B actually has a lower cost per ounce. Happy shopping!