What is the answer to 3(2n-7)+7(4-2n)

0if x and y vary inversely and y=6 as x=7, what is the constant of variation?

Sketch the region enclosed by the given curves. decide whether to integrate with respect to x or y. draw a typical approximating rectangle and label its height and width. y= 5x, y=7x^2then find the area s of the region.

Select the conic section that represents the equation. 3x2 + 3y2 -2x + 4 = 0