For the inverse variation equation xy = k what is the constant of variation, k, when x = -2 and y =5

-10
-2/5
5/2
10

Convert 16 yards to feet use the conversion rate 3 feet = 1 yard

Antonio made a scale model of a building. the model's scale is 1 inch to 235 feet and its height is 3.5 inches. what is the exact height of the actual building? enter your answer in the box.

Simplify this expression.2(10) + 2(x – 4) a. 2x + 16 b. x + 12 c. 2x + 12 d. x + 16