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1. The movement of a ball is modelled by the function y= 3sin(pi/2 x ) +7....

1. The movement of a ball is modelled by the function y= 3sin(pi/2 x ) +7. What is the average rate of change of the interval 4 is less than or equal to x less than or equal to 6.

2. Solve the equation sin^2x +1= -2sinx for 0 is less than or equal to x less than or equal to 2 pi.

3. Solve the equation sin^2x + 2sinx-3=0 where 0 is less than or equal to x less than or equal to 2pi.

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