Determine whether y varies directly with x. if so, find the constant of variation. y−12x=0 does y vary directly with x?

What is the binomial expansion of (2x-3)^5

Find the maximum value of p= 4x + 5y subject to the following constraints :

The numbers on a football field indicate 10 yard increments. you walk around the perimeter of a football field between the pylons. you walk a distance of 30623 yards. find the area and perimeter of the indicated regions. write your answers as mixed numbers, if necessary. a. one end zone: perimeter: yd area: yd2 b. the playing field (not including end zones): perimeter: yd area: yd2 c. the playing field (including end zones): perimeter: yd area: yd2