Write the system of linear equations represented by the augmented matrix and then solve. (Use variables x, y, and z.)
a. x = 35, y = –3, z = 1
b. x = 4, y = 1, z = 5
c. x = 1, y = –4, z = –5
d. x = 1, y = 4, z = 5
d. x = 1, y = 4, z = 5
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Decide whether the statement is an example of the commutative, associative, identity, inverse, or distributive property.9 ? 1 = 9
A. Commutative B. Inverse C. Identity D. Distributive
Find the expected value.A car agency has found daily demand to be as shown in the table.
Find the expected number of customers.
A. 9 B. 12 C. 10 D. 2
Use the product, quotient, and power rules of logarithms to rewrite the expression as a single logarithm. Assume that all variables represent positive real numbers.3 logm y - 5 logm p2
A. logm 
B. logm 
C. logm 
D. logm 
Use the Gauss-Jordan method to solve the system of equations.
A. x = -3, y = -3 B. x = -3, y = 3 C. x = 3, y = -3 D. No solution