Please help but do not give me any links. Find the value of each variable. Round decimals to the nearest tenth.

Ben bowled 124 and 188 in his first two games. what must he bowl in his third game to have an average of at least 160?

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?

Tickets to a science exposition cost $5.75 each for studentd and $7.00 for adults. how many students and adults went if the ticket charge was $42.75