Use an inverse matrix to find the solution to the system.
A. x = 6, y = 9, z = 7
B. x = -6, y = 12, z = 7
C. x = 6, y = 7, z = 9
D. x = -6, y = 7, z = 12
Answer: C
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Convert the units.28 L = 
cm3
A. 0.028 cm3 B. 2.8 cm3 C. 28,000 cm3 D. 2800 cm3
Solve the problem.A bakery sells three types of cakes, each requiring the amount of ingredients shown.Cake ICake IICake III
To fill its orders for these cakes, the bakery used 72 cups of flour, 48 cups of sugar, and 55 eggs. How many cakes of each type were made?
A. 13 Cake I; 8 Cake II; 7 Cake III B. 37 Cake I; 8 Cake II; 12 Cake III C. 15 Cake I; 8 Cake II; 7 Cake III D. 7 Cake I; 8 Cake II; 13 Cake III
Find the indicated matrix.Let A = 
and B = 
. Find A - B.
A. 
B. 
C. 
D. 
Write the interval as an inequality involving x, and illustrate the inequality using the real number line.[-6, 1]
A. -6 ? x < 1
B. -6 < x < 1
C. -6 < x ? 1
D. -6 ? x ? 1