7(3r-1)-(r+5)=-52
21r-7-r-5=-52
21r-r-5-7=-52
20r-12=-52
Add 12 to both sides
20r=-40
Divide by 20
r=-2
Answer:
If a week is 7 days then a Caramel Frappuccino cost 2 dollars (unrounded cost 1.99285714)
Step-by-step explanation:
cos 0 = 1/6
1 - cos²0 = sin²0
sin²0 = 35/36
in quadrant IV (4) the cos is positive sin is negative.
sin0 = - √35/6
I'm pretty sure it's 28 but sorry if I'm wrong it might be 44
