Simplify the expression by combining like terms. Write the terms from the highest to the
lowest power of the variable.
7b^2- b + 3b + 6 - 3b^2+ 5 + 2b^2+ 7b

Grading scale 1 has the following weights- (tests- 50% quiz- 25% homework- 15% final exam- 10%). calculate your final average if your performance in the class is as follows-test grades- {88, 84, 90, 75, 70, 81); quiz grades- {88, 67, 90, 90, 45, 99, 76, 98, 100}; homework- 90; final exam- 75