11. Solve each system of equations. You can use any method. Label each system as

Question

11. Solve each system of equations. You can use any method. Label each system as "one solution, "no solutions", or "infinite solutions" A movie theater charges $9 for adults and $7 for senior citizens. On a day when 325 people paid an admission, the total receipts were $2495. How many how paid were adults? How many were seniors? 12. 13. Suppose you made a scatter diagram of data that showed a linear relationship. The calculated r value is -0.91. a. What type of linear relationship is present? How do you know? b. How strong is the correlation? How do you know? What would you expect the SLOPE of the line of best fit to be? How do you know? c. Final Exam Pg 4

Explanation / Answer

11. 4x-5y =18 , 6x+10y=-8

4x-5y = 18 , 3x +5y =-4

Adding both equations

4x -5y+3x +5y = 18-4

7x = 14

x=2

Back substituting the value of x

3(2) + 5y =-4

5y = -10

y =-2

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