The length of a rectangle is 3 inches longer than half of its width. The area of the rectangle is 416 square inches. How many in
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The functions are:
and 
.
After 2 weeks, under no risk of spiders, the population of the flies is calculated by the function as
.
Similarly, we calculate s(2)=2(2)+5=4+5=9, which means that the spider consumes 9 flies in 2 weeks.
Thus, out of 32 flies, 9 are eaten by the spider, so there are 32-9=23 flies left.
Answer: 23
After 2 weeks, under no risk of spiders, the population of the flies is calculated by the function as
Similarly, we calculate s(2)=2(2)+5=4+5=9, which means that the spider consumes 9 flies in 2 weeks.
Thus, out of 32 flies, 9 are eaten by the spider, so there are 32-9=23 flies left.
Answer: 23
This is an example of an exponential decay problem.
The basic format of the equation is:
In this problem, the starting amount is 100. The rate is 0.5 because it is being cut in half every 330 days.
The basic format of the equation is:
In this problem, the starting amount is 100. The rate is 0.5 because it is being cut in half every 330 days.