Section 8.1
Quiz 8.3
Question: Solve the following system of linear equations. Enter your solution like x=-7, y=8. If there are infinitely many solutions, enter redundant. If there is no solution, enter no solution.
 6x + 8y = 38 10x + 15y = 70

Section 8.1
Quiz 8.4
Question: Solve the following system of linear equations. Enter your solution like x=-7, y=8. If there are infinitely many solutions, enter redundant. If there is no solution, enter no solution.
 15x + 10y = 70 18x + 12y = 78

Section 8.1
Quiz 8.5
Question: Solve the following system of linear equations. Enter your solution like x=-7, y=8. If there are infinitely many solutions, enter redundant. If there is no solution, enter no solution.
 15x + 10y = 70 18x + 12y = 84

Section 8.2
Quiz 8.6
Question: Solve the following system of linear equations. If there are infinitely many solutions, enter redundant. If there is no solution, enter no solution.
 6x + y – 5z = 4 5x + 7y + 2z = 28 4x – y – 5z = –4

Variation: Solve the following system of linear equations. If there are infinitely many solutions, enter redundant. If there is no solution, enter no solution.
 x – 4y + 5z = 15 x + 5y – 4z = –13 8x + 5y + 3z = –34

Section 8.2
Quiz 8.7
Question: Solve the following system of linear equations. If there are infinitely many solutions, enter redundant. If there is no solution, enter no solution.
 4x + 4y + 4z = –8 –7x – 3y – 5z = –6 3x + 4y – 6z = 8

 Section 8.2Quiz 8.8 Question: The manager of a movie theater needs to calculate the number of each type of ticket sold. Children's tickets cost \$5.50 each; senior citizen's tickets cost \$7.00; and full-price tickets cost \$8.00. There were 193 total tickets sold, and 76 of those were discounted tickets. If the total revenue was \$1397.50, how many children's tickets were sold?