Need to use matlab to solve

Imagine you are working for the state Department of Health and you are charged with monitoring bacteria at the local reservoir, which is used not only for hydroelectric production but also recreational activities. The bacteria concentration, measures as colony forming units (CFUs), is the following after a storm event: Choose a linear regression model for this data. The model results should never go below zero, so choose the regression approach carefully. In your model consideration, you want to also ponder whether bacteria can increase in concentration at any point. Use the data to make this judgement. a. Estimate the bacteria concentration at time = 0. b. Estimate the time the bacteria concentration will reach 150 CFUs