Please help me solve this question

Solve the equation 3x2 + 19x + 9 = 0 to the nearest tenth.

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

Problem melissa is her dad build a walkway in their backyard. the walkway will be 54 feet long and 1.5 feet wide. the local hardware store sells tiles which are 1.5 by 1.5 feet and come in boxes of 12. how many boxes of tiles do they need?