Aparticular sound wave can be graphed using the function y=-3 sin x. find the amplitude and period of the function.

Select all the correct locations on the image. select all the expressions that result in a product that is a rational number. mulitiple choice4/3 x 12/3 32/4 x 15/4[tex]\sqrt{\frac{3}{2} }[/tex] x 22/7[tex]\sqrt{11}[/tex] x 2/3

Can someone check my answer? you : )

Solve the equation by completing the square. x^2+2x=17