Which scenario best expresses a 400% increase?

A.

from 1 to 400
B.

from 9 to 45
C.

from 12 to 72
D.

from 100 to 400

What is an equation of the line that passes through the point (-2,3) and is parallel to the line whose equations is y=3/2x-4? i am stuck between y=3/2x or y=3/2x+6 : (

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?

Ithink i know it but i want to be sure so can you me out ?