Solve for x so that - – 2 + 6 = 4

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

An investment decreases in value by 30% in the first year and decreases by 40% in the second year. what is the percent decrease in percentage in the investment after two years

An arithmetic series a consists of consecutive integers that are multiples of 4 what is the sum of the first 9 terms of this sequence if the first term is 0