Plez 15 points, brainliest, , and a follow

When i add money am i supposed to make it like this 7+12 or 7.00+12.00 because i got 19 dollars for my answer

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?

Point r divides in the ratio 1 : 5. if the coordinates of e and f are (4, 8) and (11, 4), respectively, what are the coordinates of r to two decimal places?