Let f be the function given by f(x=sin(5x pi/4

Me find the value of x each figure.

Someone answer this asap for the length, in feet, of a rectangular rug is represented by the expression 5x² + 2x. the width, in feet, is represented by the expression 3x². which expression represents the perimeter, in feet, of the rug? a. 8x² + 2x b. 8x² + 4x c. 16x² + 2x d. 16x² + 4x

95/10 minus 1/23 i need the answer in a fraction and i need work.