Kayla read m books during the summer. Her sister, Breanne, read n books during the summer. How many books did they read altogether?

Which statement most accurately describe why the division property of exponents does not apply to the expression (-8)^2/(-3)^4

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?

Could somebody me with this radical simplification?