5.2 The Natural Logarithmic Function: Integration 299
____ 22. Suppose a population of bacteria is changing at a rate of where t is the
time in days. The initial population (when t = 0) is 500. Write an equation that gives the population at
any time t.
a.
b.
c.
d.
e.
____ 23. Suppose a population of bacteria is changing at a rate of where t is the
time in days. The initial population (when t = 0) is 1,500. Identify an equation that gives the
population at any time t and use it to find the population when days. Round your answer to the
nearest integer.
a. 12,783
b. 11,525
c. 13,533
d. 10,772
e. 11,522
____ 24. Find the time required for an object to cool from by evaluating
, where t is time in minutes. Round your answer to four decimal places.
a. 6.4346 minutes
b. 4.4251 minutes
c. 3.6907 minutes
d. 4.0598 minutes
e. 5.8496 minutes
____ 25. Suppose the demand equation for a product is Find the average price p
on the interval . Round your answer to the nearest dollar.
a. $67
b. $83
c. $57
d. $565
e. $52