The profit, P dollars, earned by a company producing spy cameras is approximated to be P = −25x^2 + 1600x − 3600, where x dollars is the selling price of one spy camera. What selling price gives the maximum profit? A) $25
B) $32
C) $16
D) $64

Many newspapers carry a certain puzzle in which the reader must unscramble letters to form words. how many ways can the letters of emdangl be arranged? identify the correct unscrambling, then determine the probability of getting that result by randomly selecting one arrangement of the given letters.