Can Somebody please help? Please show the steps and fill in the blanks!

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

Which is the solution to the inequality? 2 3/52 1/15 b< 3 2/15 b> 3 2/15

What three-dimensional solid have 6 rectangular faces, 2 equal bases that are not rectangles and 18 edges