Solve the system. x + y = 8 2x2 – y = –5 Add the equations

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

Anyone know? will mark brainliest if you're correct!

Compare the cost of the bike trips from the two companies shown.for both the cost in a linear function of the number of days which statements is true