Find the next three terms in this sequence: 5120, 1280, 320, 80,

Ihave trouble finding the nth term of a linear sequence

Select the lengths in centimeters that would form a right triangle

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 jame pay at the end?