An engineering company was hired to dig an underground tunnel directly from point A to point B, which was the distance of 1.4 miles. By mistake, however, they tunneled from point A to point C. then they tunneled from point C to point B. If tunneling costs about $120 million per mile, about how much money was wasted? show how you found your answer. (Note: 1 mile= 5,280 feet.)

question

given the diagram below, what is md?

the sum of the interior angles is 360°

take away from 360 the sum of the knows angles and you will have the angle d.

360 - 108 - 108 - 72 = 72°

graph #4 (last graph) depict the function   f(x)= -m(x-d)^1/5 i

step-by-step explanation:

we know that

m=slope

but in this function slope is -m that means slope is decreasing and it is decreasing by 1/5 points down the x-axis.

which is shown in graph four

a decreasing slope down x-axis by 1/5 points.

hence 4th graph is the right option for this.