On this math the average cost per once for glass cleaner is 7.7 cents with a standard deviation of 2.5 cent. what is the z-score of glass cleaner with a cost of 10.1 cents per ounce a: 0.96 b: 1.31 c: 1.94 d: 4.04 e: none of the above

Z = (10.1 - 7.7) / 2.5 = 2.4 / 2.5 = 0.96

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.

Polar coordinates is 8,9