Tara would like to finish 2/5 of her book by friday, if the book is 203 pages, about how many pages does she needs to read?

It would be:  2/5 * 203 = 81.2

So, your answer is 81.2

215.92 dollars is the answer

step-by-step explanation:

points a and b are equidistant from the desired line, so the line you find by using them will go through point r.

using points other than a and b will give the desired line only if they are equidistant from r. if they are randomly located, the perpendicular line you create will not necessarily go through point r, hence will not be a solution to the problem.