9 x 1 + 3 x 1/10 + 4 x 1/1000

The sum of the reciprocal of a positive number and the reciprocal of 2 more than the number is 3/4 equation: the number is

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

Af jewelry box is in the shape of a rectangular prism with an area of 528 cube inches. the length of the box is 12 inches and the height is 5 1/2 inches. what is the width of the jewelry box