Sarai has decided to take a risk. she's been saving money and now she's ready to invest in stocks. most of her stocks give her a great return, but one–bambi's beach bonnets–is a mixed story. the value of her shares in bambi's beach bonnets over timem is modeled by the function v(t) = −2x 2 + 22x + 280, where v represents the value of her investment and t represents time in weeks. (a) what key feature of the function tells us when her investment was worth the most?

Exclude leap years from the following calculations. (a) compute the probability that a randomly selected person does not have a birthday on october 4. (type an integer or a decimal rounded to three decimal places as needed.) (b) compute the probability that a randomly selected person does not have a birthday on the 1st day of a month. (type an integer or a decimal rounded to three decimal places as needed.) (c) compute the probability that a randomly selected person does not have a birthday on the 30th day of a month. (type an integer or a decimal rounded to three decimal places as needed.) (d) compute the probability that a randomly selected person was not born in january. (type an integer or a decimal rounded to three decimal places as needed.)