Type the equations and values needed to compute the difference between the market value of the car and its maintenance and repair costs for the eighth year.

the difference between the market value of the car and its maintenance and repair costs for the eighth year is  $-775

Step-by-step explanation:

In eighth year:

we can find values

Percentage of market value of car =5%

Maintenance and Repair costs as percentage of Car's value =10%

the difference between the market value of the car and its maintenance and repair costs for the eighth year = (Percentage of market value of car)-(Maintenance and Repair costs as percentage of Car's value)

=5%-10%

=-5%

Since, original cost =15500

so,

the difference between the market value of the car and its maintenance and repair costs for the eighth year = -5% of 15500

the difference between the market value of the car and its maintenance and repair costs for the eighth year = -775

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.