What is the unit rate of 405 rotations in 5 minutes

Which system of linear inequalites is represented by the graph?

What is the standard form of -5x^2+2x^4-11+x^3+3x

Kapil needed to buy a long wooden beam. he went to two sawmills that each charge an initial fee plus an additional fee for each meter of wood. the following equation gives the price (in dollars) of a wooden beam from the first sawmill as a function of its length (in meters). p = 5+20xp=5+20x