Brandon works at a nearby electronics store. He makes a commission of 6% on everything he sells. If he sells laptop for $309 how much money does bread make in commission? A.$18.54
B.$309.00
C.$6.00
D.327.54
HELLLP!

A. $18.54

Step-by-step explanation:

laptop cost x commission = money made

309 x 0.06 = 18.54

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.

i think it might be a but you might want a second opinion