Given sin(- 0) = - 1/4 and tan 0 = √15/15 What is the value of cos 0?

A. √15/60
B. -√15/4
C. √15/4
D. -√15/60

As a salesperson you get $50/day and $3.60/each sales you make.if you want to make $60 in one day, how many sales would you need need to make ? a 3b 4c 5d 6 show work.