How would you write twenty-one thousand six hundred fifty-six in standard form? 27,656
21566
21,665
2165

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?

The center of the circumscribed circle lies on line segment and the longest side of the triangle is equal to the of the circle.

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.