Page 2 of 2 - 7. Solve the following system of equations. 2x + 3y + z = 5 -2x - y + 4z = 60 X + 2y - 8z =-30 8. Solve the following using a system of equations. Be sure to define your variables, write a system of equations, solve the system, and write your answer in a sentence. (Use the table to organize the information if desired.) A golf course charges $8 for children under age 13 to play a round of golf. Senior citizens are charged $10 to play a round. Everyone else pays $15 per round. Yesterday 200 people played a round of golf at the course, paying a total of $2540. If there were 20 more senior citizens who played than there were children under 13 years old who played, find the number of people who played from each age bracket. Search