Question

When driving down a mountain road, you notice warning signs indicating that it is a “9% grade”. This means that the slope of the road is -9/100. Approximate the amount of horizontal change in your position if you note from elevation markers that you have descended 2000 feet vertically. (Round your answer to one decimal place.)

Answer 1

Using proportions, the amount of horizontal change in your position is of 180 feet.

What is a proportion?

A proportion is a fraction of a total amount, and the measures are related using a rule of three. Due to this, relations between variables, either direct or inverse proportional, can be built to find the desired measures in the problem.

The horizontal change is of 9% for each feet descended, hence, for 2000 feet descended, the horizontal change is given by:

0.09 x 2000 = 180 feet.

More can be learned about proportions at https://brainly.com/question/24372153

#SPJ1