Given he paid $950 for each credit hour of classes.
If he teaches a total of 51 credit hours.
For 1 credit hour he takes $950. for 51 credit hours, he will take
[tex]\begin{gathered} 1\text{ hour =\$950} \\ 51\text{ hours = \$950}\times51 \\ 51\text{ credit hours = \$48,450} \end{gathered}[/tex]Thus, the total money for 51 credit hours will be $48,450.