Kim's age is twice that of her sister. when you add kim's age to her sister's age, you get 36. how old is each sister? (a)write an equation that represents the situation. explain any variable used.(1 point) solve the equation from part (b). show your work. state your solution as a complete sentence.

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.