17. a piece of pvc material weighs 0.063 pounds per cubic inch. what's the weight of a 36-inch piece of pvc pipe with an outside
diameter of 0.82 inches and an inside diameter of 0.75 inches?
a. 0.783 pounds
b. 0.814 pounds
c. 0.678 pounds

Refer to interactive solution 17.45 to review a method by which this problem can be solved. the fundamental frequencies of two air columns are the same. column a is open at both ends, while column b is open at only one end. the length of column a is 0.504 m. what is the length of column b?

How to find the exponential function y=ca^x, with points (1,2) and (2,1)

David estimated he had about 20 fish in his pond. a year later, there were about 1.5 times as many fish. the year after that, the number of fish increased by a factor of 1.5 again. the number of fish is modeled by f(x)=20(1.5)^x. create a question you could ask that could be answered only by graphing or using a logarithm.