What is the sum of 25 7/8 + 11.5

A - 36 3/8
B - 36 7/8
C - 37 3/8
D - 37 7/8

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

Identify the expression equivalent to 4(x + x + 7) − 2x + 8 − 4 by substituting x = 1 and x = 2.

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