Question

A salon sells its cologne wholesale for $8.75 per bottle. The variable costs of producing x thousand bottles is -3x2 +2800x-425dollars, and the fixed costs for manufacturing are $ 300, 000. Find expressions for the​ revenue, cost, and profit from selling x thousand items.

a. Revenue       b. Cost c. profit

  

The amount of a certain radioactive material​ (in grams) in a storage facility at time t is given by C(t)=85e−.21t​, where time is measured in years. Solve algebraically.

​(a). How much of the radioactive material was present​ initially?     

(b). In approximately how many years will there be 42.5 grams of the substance left?

Find the present value of an ordinary annuity with deposits of $7,498 quarterly for 3 years at 8.8​% compounded quarterly.

Answer 1

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