At noon, a Nissan GTR is 40 miles west of a Nissan 370z. The GTR is moving North at 120mph and the 370z is moving south at 100mph. How fast is the distance between the two cars changing at 12:30pm?

Typically a point in a three dimensional cartesian coordinate system is represented by which of the following answers in the picture !

Sandy is upgrading her internet service. fast internet charges $20 for installation and $52.45 per month. quick internet has free installation but charges $57.45 per month. part 1 out of 2 complete the equation that can be used to find the number of months after which the internet service would cost the same. use the variable x to represent the number of months of internet service purchased.

What is the probability that a person's favorite season is fall? write the probability as a fraction. spring - 13% summer - 39% fall - 25% winter - 13% none, i like them all - 10%