It costs sam $7.00 to purchase a pair of goggles. He then marks up the goggles 75%. How much does sam charge for a pair of goggles.

Given:

Cost of a pair of goggles = $7.00

Mark up = 75%

To find:

The price of a pair of goggles after markup.

Solution:

We have,

Cost of a pair of goggles = $7.00

Mark up = 75%

So, price of a pair of goggles after markup is

Therefore, the price of a pair of goggles after markup is 12.25.

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.

okay wait before i answer, is this for your points on a graph?