Math word problem, please help!!

Mustafa contributes 11% of his $67,200 annual salary to his 401k plan. what is his pretax income

Using the quadratic formula find the zeros of the given polynomial -5x^2+3x-11

Which sentence uses an objective tone? we will plant the best garden of any school in the area. the new campus garden will surely be envied by other schools. a garden would provide numerous benefits to the students. you will probably agree that gardens have many benefits.