Michael works at central tech college as a math teacher. He will be paid $900 for each credit hour he teaches. During the course of his first year of teaching, he would teach a total of 50 credit hours. What is michael's gross annual income? round to nearest thousand $.

The smokey mountains have over 2,100 miles of rushing mountain streams and rivers that flow through the park. in each mile lives a diverse community of native fish, amphibians, insects, and larvae, some of which are found only in the southern appalachians. park managers and scientific researchers test many factors such as fish populations, the watersheds and water tests to determine a) too many lizards are present b) the water quality of the stream c) rainwater is running into local streams d) if visitors to the park are overstaying their welcome