Attendance at a state park throughout the year is found to be periodic and can be modeled by a sine function. The attendance ranges from a low of approximately 1,000,000 visitors in September to a high of approximately 2,000,000 visitors in March.

Step-by-step explanation:

For a sinusidal function :

y = Asin(w + c) + s

Where ;

A = amplitude ;

w= angular velocity,

s = vertical Displacement,

c = phase angle

A = (maximum - minimum) / 2

A = (2,000,000 - 1,000,000) /2 = 1,000,000/2 = 500,000

w = 2π/T ; T = 12 (number of months in a year)

w = 2π/12 = π/6

s = (maximum + minimum) / 2

s = (1000000 +2000000) /2 = 3,000,000/2 = 1,500,000

500,000sin(π/6 + 0) + 1500000

500000sin(π/6)+1500000

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

the answer is 62.8 cubic units