Answer: 5 new games. 1 old game.
4x5=$20
Add the remaining $2 which Is the cost of 1 old game to get to the total spent.
y = sin(360) = sin(0) = 0
answer: y=0
You can use the graph by drawing a unit circle centered about the origin. Then find the point and the corresponding y value.
I do believe that the answer is 9.<span />
3<em>x</em> + 120° + <em>x</em> + 120° = 360°
4<em>x</em> + 240° = 360°
4<em>x</em> = 120°
<em>x</em> = 30°
<em>y</em> = 1/2 (3<em>x</em> - <em>x</em>)
<em>y</em> = 1/2 (90° - 30°)
<em>y</em> = 1/2 × 60°
<em>y</em> = 30°
