Please help I will give 30 points to whoever can get this question right for me, please hurry

Which expression is a factor of 12x2 + 29x – 8? x – 8 2x – 1 3x + 8 4x + 1

Franklin is purchasing a home for $82,107 and is financing 80% of it. the documentary stamp tax on the deed in his state is $0.70 per $100 or portion thereof. how much will he pay for the documentary stamp tax?

What is the approximate mark up percentage rate before m equals $1740 marked up from p equals $19,422