Solve the problem. Round rates to the nearest tenth of a percent and dollar amounts to the nearest cent.A local dealer sells baseballs for $25 each. If $21.77 is the cost, what is the percent of markup on the cost?
A. 147.1%
B. 14.8%
C. 87.1%
D. 12.9%
Answer: B
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Solve by the method of elimination by substitution.x + 8y = 0x - 8y = 80
A. x = 40, y = 5 B. x = 8, y = -1 C. x = 40, y = -5 D. x = -5, y = 40
Solve the discount problem.A lamp originally priced at $290 is on sale at 35% off. Find the discount. Round to the nearest cent.
A. $188.50 B. $279.85 C. $101.50 D. $10.15
Solve the problem.A salesperson has two job offers. Company A offers a weekly salary of $240 plus commission of 8% of sales. Company B offers a weekly salary of $480 plus commission of 4% of sales. What is the amount of sales above which Company A's offer is the better of the two?
A. $6000 B. $3000 C. $6100 D. $12,000
Write the given set in interval notation and graph the set on a number line.{x|x ? -9}
A. (-?, -9)
B. (-9, ?)
C. [-9, ?)
D. (-?, -9]