i need this to be in TC, TR variable cost and FC formula form please! OR a system of equations answer

Q1 Jay and his friends set up a baseball tournament. he can rent a baseball field for a daily charge of $200 and equipment for$150 per day. if he hires independent umpires, he would need to pay $280 for the day. he would arrange to have caps made for every player costing 4$ each. if john can get 90 people to participate what would he have to charge each of them to recover his costs?

Q2 a jacket and two pairs of pants together cost $175 the jacket is valued at three times the price of one pair of pants. what is the value of the jacket?

Q3 nancy's sales last week were $140 less than three times andrea's sales. together they sold $940. determine how much each person sold last week?

Q4 a brush with wood has been producing 2320 chairs a day working two shifts. the second shift has produced 60 chairs fewer than four-thirds of the number of chairs produced by the first shift. determine the number of chairs each shift has produced?