determine the extreme values of objective function f=9x+7y subject to 7≥x+2y, 6≥x-y, 0≥x,0≥y by lpp method

Module 10 coordinate proof using slope and distance answers is quadrilateral abcd a parallelogram? explain how you know.

Arestaurant chef made 1 1/2 jars of pasta sauce. each serving of pasta requires 1/2 of a jar of sauce. how many servings of pasta will the chef be bale to prepare using the sauce?

Is this a polynomial function? i need to know asap