Someone help me please

Which of the fallowing best completes the sequence 5,10,15, a) 30 b) 22 c)25 d)35

What could explain what happened when the time was equal to 120 minutes

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?