A gardener will use up to 230 ft. for planting flowers and vegetables. He wants the area used for vegetables to be at least twice the area used for flowers let X denote the area used for flowers. Let Y denote the area used for vegetables. Shade the region corresponding to all values of X and Y that satisfy these requirements

d) 30 units^2

area of rectangle = l × b

we know,

length = 10 unit

breadth = 3 unit

applying the formula,

= l × b

= 10 × 3

= 30 unit^2

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2y+y=5

add 2y and y

mrbilldoesmath!

answer: a parabola

steps:

(x-1)(x+4)   = x(x+4) - 1(x+4) = (x^2 + 4x) - (x+4)

                = x^2 +4x -x -4   = x^2 +3x -4

which is a parabola

mrb