Math 106

MATH 106–Finite Mathematics

Quiz 3 (20 points)–Mathematics of Finance

Short Answer (4 points each). Show your work.

1. Write the augmented matrix for the linear system, 5x + 4y = 4 and 2x + 3y = 9.

2. Graph the system of inequalities give by 2x + 3y < 5 and y > 1.

3. Graph the system of inequalities give by y ≥ 2x − 1.

4. Solve the system by Gaussian elimination,

5. At a competing cupcake store, $2,380 worth of cupcakes are sold daily. The chocolate cupcakes cost

$2.50 and the red velvet cupcakes cost $1.25. If the total number of cupcakes sold per day is 1240, how many of each flavor are sold each day?