6 I think this is correct.
Answer: 
<u>Step-by-step explanation:</u>
Inverse is when you swap the x's and y's and solve for y:


I’m guessing this is a trick question, but I’m gonna go with what I think
Answer: She would have to pay 58 in a month if she downloaded 50 songs with the subscription from the streaming music services. She’d pay 50 dollars for 50 songs, since one song costs a dollar.
Sin a * cos b + cos a * sin b=sin (a+b)
sin 78 * cos 42 + cos 78* sin 42=sin (78+42)=sin 120=sin(180-120)=
sin 60=√3 / 2
Answer: sin 78 * cos 42 + cos 78* sin 42=<span>√3 / 2</span>