>>>>>>>>> ;>>>>>>>>&g t;>>>>>>>>& gt;>.

The first one is $1.19 for each balloon.

Second one is 7 months.

Step-by-step explanation:

1. 19.63 - 12.49 = 7.14 < (the cost of all six balloons) 7.14 divided by 6 = $1.19

2. 1,250 - 65 = 1,185 - 65 = 1,120 - 65 = 1,055 - 65 = 990 - 65 = 925 - 65 = 860 - 65 = 795    You had to subtract 65 each month 7 times to get less then 800.

Hope this helps!! <3 I miss easy math :,(

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.