Given sin= 3/5 find cos

What is the equation of a line passing through the point (6,1) and parallel to the line whose equation 3x=2y+4

Danielle earns a 7.25% commission on everything she sells at the electronics store where she works. she also earns a base salary of $750 per week. what were her sales last week if her total earnings for the week were $1,076.25?

How can you find the mean absolute deviation (mad) for this set of data?