Choose the method of pay that would result in the most earnings for one month on sales of $40,000. a. straight commission of 7.5% on all sales. b. monthly salary of $1,600 plus 2.5% commission on all sales. c. graduated commission of 5% on the first $30,000 in sales and 6% on anything over that.

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.

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