Angie and Kenny play online video games. Angie buys 1 software package and 1month of gameplay. Kenny buys 1 software package and 2 months of gameplay. each software package costs $30. if their total cost is $90, what is the cost of one month of gameplay?

10$ I think

Step-by-step explanation:

2*30=60

90-60=30

30/3=10

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.