An arch has the shape of a semi-ellipse. The arch has a height of 8 feet and a span of 36 feet. Find an equation for the ellipse and use it to find the height, in feet, of the arch at a distance of 2 feet from the center.

Bob is putting books on a shelf and takes a break after filling 18 1/2 inches on the book shelf. the book shelf is now 2/3 full. how long is the entire bookshelf?

Handsome jack is buying a pony made of diamonds. the price of the pony is p dollars, and jack also has to pay a 25% diamond pony tax. which of the following expressions could represent how much jack pays in total for the pony?

What is the value of x enter your answer in the box (3x+50