plz guys help me plz

Which shows one way to determine the factors of 4x3 + x2 – 8x – 2 by grouping?

What is the x-intercept and y-intercept of the equation 2x+1. 2o

Pepe and leo deposits money into their savings account at the end of the month the table shows the account balances. if there pattern of savings continue and neither earns interest nor withdraw any of the money , how will the balance compare after a very long time ?