1) A manufacturer can produce radios at a cost of $2 a piece. The radios have be

Question

1) A manufacturer can produce radios at a cost of $2 a piece. The radios have been selling for $5 a piece, and at this price, consumers have been buying 5000 radios a month. The manufacturer in planning to raise the price of the radios and estimates that for each $1 increase in the price, 500 fewer radios will be sold each month. Express the manufacturer's monthly profit as a function of selling price, and find the optimal selling price.

2)  F(x) = (X^2 + 3)/(x + 1)

Find :
where: f (x) is up and f(x) is down

where: f (x) is concave up and concave down

  Relative max and relative min:

inflection points

sketch the graph
  

3) A radioactive substance decays exponentially. If 600 grams of the substance was present intially and 400 grams is present 40 years later, how many grams will be present after 120 years?

Explanation / Answer

o grams

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