The graph above shows the distance Mr. Johnson drives over time. What is the speed at which Mr. Johnson is driving?
A. 7 miles per hour
B. 40 miles per hour
C. 60 miles per hour
D. 80 miles per hour

step-by-step explanation:

∆abc has the points a(1, 7), b(-2, 2), and c(4, 2) as its vertices. formed with the point d(1, 2) as its third vertex, then ∆abd is triangle.

what is the question? i am guessing you are looking for the area.

to find an area, you have to do length x width.

in this case, it would be 12 ft x 4 ft = 48 sq. ft