For question 13 : A student ticket to the movies cost $4. Write an equation in which x presents the number of tickets purchased and y presents the total cost of the tickets. Please answer this for me pls and show your work. One right answer may get brainliest.

y = 4x

since x is the number of tickets, and each ticket costs 4, you just have to multiplicate the number of tickets by the value and you'll get the total, expressed as y.

hope it helps :)

hope it you

step-by-step explanation:

sin(7pi/6 - pi/3)  

= sin(7pi/6 - 2pi/6)  

= sin(5pi/6)  

= sin(pi - pi/6)  

= sin(pi/6)  

= 1/2  

sin 7pi/6 - sin pi/3  

= sin (pi + pi/6) - sin pi/3  

= -sin pi/6 - sin pi/3  

= -1/2 - sqrt(3)/2  

= -(1+sqrt(3))2

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