Jerry uses 15 pieces of origami paper for his 3 projects. If he uses the origami paper at the same rate for his next project, how many pieces of origami paper will he use for his next project?

Restrictions on f(x) = 1/x+5 and g(x) = x-2

Aregular hexagon rotates counterclockwise about its center. it turns through angles greater than 0° and less than or equal to 360°. at how many different angles will the hexagon map onto itself?

Astuntman jumping off a 20-m-high building is modeled by the equation h=20-5t^2, where t is the same in seconds. a high-speed camera is ready to film him between 15m and 10m above the ground. for which interval of time should the camera film him?