Multiply his total credit hours by how much he makes per credit hour.
50 x 900 = $45,000
Michael's gross annual income is $45,000.
Given
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.
The annual income is given by the product of the amount paid and total credit hours.
Michael's gross annual income is;
[tex]= 900 \times 50\\\\= 45,000[/tex]
Hence, Michael's gross annual income is $45,000.
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