What are the solutions to 6x(second power 2)-5x-4=0

Which of the following of the following sets of side lengths could not form a triangle?

Bill works as a waiter and is keeping track of the tips he ears daily. about how much does bill have to earn in tips on sunday if he wants to average $22 a day? tips by day tips (dollars) monday tuesday wednesday thursday friday saturday $14 $22 $28 $36

What is the value of x in the equation 2(x-4) = 4(2x + 1)?