an engineer is going to redesign an ejection seat for an airplane. the seat was designed for pilots weighing between lb and lb. the new population of pilots has normally distributed weights with a mean of and a standard deviation of .

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.