Jamal and Florence both have lemonade stands. • The profit earned from Jamal's lemonade stand for selling 2 cups of lemonade is represented by the equation y=1.52 - 7.
• The profit earned from Florence's lemonade stand for selling cups of lemonade is represented by the equation y = 1.252 - 8
Which statement is true?
The price of each cup of lemonade is the same at each lemonade stand.
The price of each cup of lemonade is $0.25 less at Florence's lemonade stand compared to Jamal's lemonade stand.
The price of each cup of lemonade is $0.25 more at Florence's lemonade stand compared to Jamal's lemonade stand.
O There is not enough information to compare the prices at each lemonade stand.

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Step-by-step explanation:

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3. parallelogram

step-by-step explanation:

we turn each of our sides into direction vectors

ab=b-a=(3 - 7, 1 - 0) = (-4, 1)

bc=c-b=(1,6)

cd=d-c=(4,-1)

da=a-d=(-1,-6)

we see how the opposite sides have negated direction vectors; this is characteristic of a parallelogram.   we have congruent sides ab=cd and bc=da with unequal lengths because 1^2+6^2 is different from (-4)^2+1^2.   so it's not a square or a rhombus.  

we check the dot product of direction vectors of adjacent sides.   we have

ab dot bc = -4(1) + 1(6) = 2

that's not zero so the sides are not perpendicular.   we've ruled out rectangle.

the direction vectors indicate two pairs of congruent parallel sides, so we choose parallelogram over trapezoid.

go on the tube you might find some information there