Solve the equation.
+ 3 = x - 1
A. 
B. {8}
C. {2, 8}
D. {-4}
Answer: B
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Add or subtract. Simplify by collecting like radical terms, if possible.
+ 9
+ 5
A. 79
B. -32
C. -79
D. -4
Solve the problem.Sue buys a house for $416,000. What is the value of the house 1 year later, if it depreciates by 3.7% in the first year after she buys it?
A. $400,608 B. $262,080 C. $153,920 D. $15,392
A geometric sequence is given. Find the common ratio and write out the first four terms.{sn} = {3n}
A. r = 3; s1 = 3, s2 = 6, s3 = 9, s4 = 12 B. r = 3n; s1 = 3, s2 = 6, s3 = 9, s4 = 12 C. r = 3; s1 = 3, s2 = 9, s3 = 27, s4 = 81 D. r = 3n; s1 = 3, s2 = 9, s3 = 27, s4 = 81
Solve the system of equations using matrices. Use Gauss-Jordan elimination. x + y - z + w = -5 3x - y + 3z - 2w = 7-2x + 2y + z - w =16 -x - 2y - 3z + 3w = -22
A. {(-2, 3, 4, -2)}
B. {(
, - 
, - 
, - 
)}
C. {(2, -3, -4, -2)}
D. {(-2, -3, 5, 
)}