Suppose that the number of bacteria in a certain population increases according to an exponential growth model, with a growth rate of 19% per hour. suppose also that a sample culture of 2300 bacteria is obtained from this population. find the size of the sample after five hours. round your answer to the nearest integer.

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.

The quadratic function h(t)=-16.1t^2+150 choose the graph representation

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle.he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field