Use a system of linear equations in three variables to solve the following problem. a certain brand of razor blade comes in packages of 6, 12, and 24 blades, costing $2, $3, and $4 per package, respectively. a store sold 11 packages containing a total of 150 razor blades and took in $32. how many packages of each type were sold?

Leading guitar string producer wound up inc. has enjoyed a competitive advantage based on its proprietary coating that gives its strings a clearer sound and longer lifespan than uncoated strings. one of wound up's competitors, however, has recently developed a similar coating using less expensive ingredients, which allows it to charge a lower price than wound up for similar-quality strings. wound up's competitive advantage is in danger due to a. a lack of perceived value b. a lack of organization c. direct imitation and substitution d. resource immobility