Perform the operation.
(9x2 + 6x – 7) + (-9x - 5)

PLS HELP ASAP PLS

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?

Find the nonpermissible replacement for binthis expression.b2/5b +5

What is the the greatest common factor ?