Solve the system.y = log4(-x)y = log4(x + 8)
A. {(-2, 1)}
B. {(4, 2)}
C. {(-4, 2)}
D. {(-4, 1)}
Answer: D
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Solve the problem.This chart shows the fees for an 18 hole round of golf for each of the last 5 years at a local municipal golf course. Assume that this chart defines a function with the name of f. Find 
A. $28 B. $25 C. $20 D. $24
Determine whether the system of equations is consistent or inconsistent. If the system is consistent, determine whether the equations are dependent or independent.
A. Independent B. Dependent C. Inconsistent
Following are forecasts of worldwide annual cell phone handset sales.
Yearx357Salesy(Millions)500600800?
(
represents 2003)Obtain the associated regression line. (Round coefficients to 2 decimal places if necessary.) Use your regression equation to project the 2017 sales.
?
A. 1533.33 B. 1523.33 C. 1543.33 D. 1547.33 E. 1516.33
Which of the following is a true statement? ?
A. If ?A and ?C are matrices and 
, then 
.
B. Given 
, if 
, then M has an inverse.
C. If ?A, X, and ?C are matrices, and 
, then 
.
D. If ?A and ?C are matrices and 
, then 
and if ?A, X, and ?C are matrices, and 
, then 
is true.
E. None of these statements is true.