Determine whether the matrix is in row-echelon form. If it is, then determine also whether it is in reduced row-echelon form.
A. Yes; yes
B. Yes; no
C. No
Answer: C
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Find the equation of the graph.
A. y = 
x + 6
B. y = 
x - 5
C. y = 6x - 5
D. y = -6x - 5
Solve the equation on the interval [0, 2?).sin 3x = 0
A. 0, 
, 
, ?, 
, 
, 2?
B. 
, 
C. 
, 
, 
, 
D. no solution
Solve the problem.There are five brands of a product on the market, three of which have very loyal customers who never change brands. The transition matrix for the five brands is shown below (where the brands are labeled A, B, C, D, and E). About how many times, on average, will a person currently using brand C or brand D use his or her current brand before trying one of the brands that have loyal followings? Round your answer to the nearest hundredth.ABCDE
A. 1.31 B. 0.21 C. 2.51 D. 1.20
Solve.657 = 110 + x
A. 537 B. 553 C. 547 D. 557