Task 1 a real state company sells plots of land. the plot shown at the right cost $84,120. what is the price per square foot of the land?

The price is $1.6 per square foot of the land

Step-by-step explanation:

step 1

Find the area of the plot of land

we know that

The area of the plot of land is equal to the area of trapezoid 1 plus the area of trapezoid 2

see the attached figure to better understand the problem

Remember that

The area of a trapezoid is equal to

Find the area of trapezoid 1

we have

substitute

Find the area of trapezoid 2

we have

substitute

The area total of the land is

step 2

Find the price per square foot of the land

Divide the total cost by the total area

solve systems of equations by graphing. a system of linear equations contains two or more equations e.g. y=0.5x+2 and y=x-2. the solution of such a system is the ordered pair that is a solution to both equations. to solve a system of linear equations graphically we graph both equations in the same coordinate system