If point a, (12,-5) was expressed as (r, theta) using polar coordinate, what is the value of r?

Ris the distance the point is from the origin.the value of  is just the hypotenuse of the right angle triangle that forms using the cartesian coordinates.you can also think of it as a modification of the distance formula, with  as one of the points.r = 13

Ithink it is correct but just ask someone else but i am sure it it

The answer would be 27 because assuming that each package has 1 bar of soap and 1 tube of toothpaste, after 27 packages they would run out of toothpaste