A number is decreased by seven. Then, the new number is multiplied by 3 to get an answer of -9. What is the original number? ( please hurry i need to finish my assesment ) A.) - 4
B.) - 30
C.) 4
D.) 30

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?

Find the distance between (7,-6) and (-3,-9)

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?