Acertain drug is made from only two ingredients: compound a and comppund b. there are 5 milliliters of compound a used for every 4 milliliters of compound b. if a chemist wants to make 477 milliliters of the drug, how many milliliters of compound a are needed?

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.