Name:    Alg. II SOL AII.12

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.

1.

Which is the multiplicative inverse of ?
 a. c. b. d.

2.

Which matrix is its own multiplicative inverse?
 a. c. b. d.

3.

Which matrix equation is equivalent to the system of equations below?
 a. c. b. d.

4.

At Monticello, the home of Thomas Jefferson, there is one admission price for adults (ages 12 and over) and another price for children aged 6-11. Children under 6 are admitted free. A family of six, 2 parents and 4 children ages 5, 7, 9, and 11, paid \$44 for admission. Another family made up of 2 parents, a grandmother, 8-year-old twins, a 10 year-old, and a 14 year-old, paid \$70. What is the price of an adult admission?
 a. \$6 c. \$13 b. \$10 d. \$15

5.

Liam and Nani went shopping at a store that was having a sale where all DVDs were one price and all CDs were another price. Not including sales tax, Liam paid \$69 for 2 DVDs and 3 CDs, while Nani paid \$73 for 1 DVD and 5 CDs. If x represents the price of 1 DVD and y represents the price of 1 CD, which matrix equation can be used to find the price for each DVD and the price for each CD?
 a. c. b. d.

6.

Jenna spent a total of \$14.32 for a combination of 37-cent and 23-cent postage stamps. The number of 37-cent stamps was 2 more than twice the number of 23-cent stamps. How many 23-cent stamps did she buy?
 a. 30 c. 15 b. 28 d. 14