Each side of a square is increasing at a rate of 4 cm/s. at what rate is the area of the square increasing when the area of the square is 16 cm2?

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?

60 musicians applied for a job at a music school. 14 of the musicians play both guitar and drums, 28 play drums, 18 play the guitar. what is the probability that the applicant who gets the job plays drums or guitar?

Why is x= 4 a solution to the proportion 14/x 56/1 6