Cost, Revenue, Profit A company that manufactures pet toys calculates that its costs and revenue can be modeled by the equations
C = 75,000 + 1.05x and R = 500x-x^2/25
where x is the number of toys produced in 1 week. If
production in one particular week is 5000 toys and is increasing at a rate of 250 toys per week, find:
(a) the rate at which the cost is changing.
(b) the rate at which revenue is changing.
(c) the rate at which profit is changing.

Bella want to know what the students at her school think of her show. which is the best group to survey to find this information a. go to the mall and ask all of the students she recognizes from school b. ask her viewers to call in durning an episode of the show c. get a list of students at her school from the office and use a random number generator to pick 30 of them d. get a list of students at her school from the office and pick the first 30 students on the list