The commutative property does not work which operations

The formula for any geometric sequence is a n = a 1 · r n - 1, where a n represents the value of the nth term, a 1 represents the value of the first term, r represents the common ratio, and n represents the term number.

Rock music accounted for 34.5% of the total sales of recorded music in 1999, and 22.8% of the total sales of recorded music in 2009. Find the average rate of change of the percentage of sales of rock music from 1999 to 2009.

Bread at the orphanage was in short supply, so each loav was shared among 16 children. The cook set out 11 loaves of bread at the evening meal. How many children could share the loaves?

Negative seven plus four

Solve for x 4/5 (15z+20) - 7z=5/6 (12z-24) + 6

Solve the equation for y. 5x - 7y = 10 A. y=-7/5x-7/10 B. y=7/5x 10/5 C. 5/7x-10/7 D. - 5x-7

What is the decimal equivalent to 7/20

Which number is a solution to the inequality? 10.6

In one state, sales tax is 6%. If sales tax on a car is $564.00, find the price of the car before tax.

A 6-pound bag of sugar contains 681 one-teaspoon servings and costs $4.49. A batch of muffins uses 1 cup of sugar.