Can someone help me with this questions please?

Answer soon(fast) 15 pts-brainliest? for right answer with small explination a restaurant catered a party for 40 people. a child’s dinner (c) cost $11 and an adult’s dinner (a) cost $20. the total cost of the dinner was $728. how many children and adults were at the party? use the table to guess and check.(i couldn't get the graph onto the question)                                8 children and 32 adults9 children and 31 adults10 children and 30 adults12 children and 28 adults

Joe has some money in his bank account he deposits 45$ write an expression that represents the amount of money in joe's account

If the perimeter of the garden is 37 ft. the width is x and the length is 15 ft. what is the width of the garden in feet?