Peter gets $90$ as the homework average, $60$ for the final exam, $70$ for midterm exam$1,80$ for the midterm exam$2,80$ for knowledge check, and $100$ for class practice.

Using the formula $($Total grading $=10\%{?}^{**}$ Homework $+30\%{?}^{**}$ Final $+30\%{?}^{**}($Higher Midterm Exam grade$)+10\%{?}^{***}$ knowledge check $+20\%{?}^{***}$ in$-$class practice to calculate the course total for Peter is