Jacob ate pie for dessert. He says the amount he ate is equal to the product One-fifth times one-half. Which model represents how much of the whole pie Jacob ate? pls help

Can someone answer these problems for me

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?

Simplify -4z+2y-y+-18z a.-22z+y b.-14z+2 c.3y+22z d.y +14z