How do i do this i'm really behind so o would like some

Collin did the work to see if 10 is a solution to the equation r/4=2.4

Write the standard form of an equation with (see picture below)

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.