What two numbers multiply to 4 and add to -13?

Answer this question only if you know the 30 points and

Jamie went to home depot.she bought 25 bags of soil that cost $9 per bag.she bought 15 pots at $8 each, and she bought 23 bags of pebbles at $15 each.she used a coupon that gave her $5 off for every 100 dollars she spent. how much did jamie pay at the end?

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a,b and c integers and a> 1