Rafael's salary last year was $49,500 and he took home $38,610. What was his federal income tax withholding
rate?

Need solving this second acceleration problem.

Jonathan can type 20 documents in 40 minutes ,and susan can type it in 30 minutes and jack can type it in 24 minutes working together ,how much time will it is take them type the same document

Which equation is y = -6x2 + 3x + 2 rewritten in vertex form?