Find a basis for the column space of the matrix.Let A = 
and B = 
.It can be shown that matrix A is row equivalent to matrix B. Find a basis for Col A.
A. 
, 
, 
B. 
, 
, 
C. 
, 
, 
D. 
, 
, 
, 
, 
Answer: A
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The equation 
has the same solution(s) as the equation 
.
Answer the following statement true (T) or false (F)
Graph the system of inequalities. Find the coordinates of the vertices.2y + x ? -2,y + 3x ? 9,y ? 0,x ? 0
A. 
(0 , -2) , (0, 9) , (4, -3)
B. 
(-2, 0) , (0, 9) , (0, 0)
C. 
(0 , -2) , (3, 0) , (4, -3)
D. 
(0, 0) , (0 , -1) , (3, 0) , (4, -3)
Determine convergence or divergence of the alternating series.
A. Converges B. Diverges
Solve the problem.Bill kept track of the number of hours he spent exercising each week. The results for four months are shown below. Find the mean number of hours Bill spent exercising per week. Round to the nearest hundredth.6.60 8.70 6.60 6.90 6.60 6.608.70 6.60 6.60 6.60 6.90 7.507.40 8.70 8.70 8.30 6.60 8.70
A. 7.41 B. 7.02 C. 7.84 D. 7.62