Question

1) It has been estimated that a certain stream can support 76,000 fish if it is pollution-free. It has further been estimated that for each ton of pollutants in the stream, 1200 fewer fish can be supported. Assuming that the relationship is linear, write the equation that gives the population of fish p in terms of the tons of pollutants x.

2)A retired woman has $80,000 to invest. She has chosen one relatively safe investment fund that has an annual yield of 9% and another riskier fund that has a 13% annual yield. How much should she invest in each fund if she would like to earn $8,000 per year from her investments?

9% fund	$
13% fund

3)Suppose the supply of x units of a certain product at price p dollars per unit is given by

p = 16 + 5 ln(2x + 1).

How many units of this product would be supplied when the price is $46 each? (Round your answer to the nearest whole number.)
units

Answer 1