Graph.y = 
A. 
B. 
C. 
D. 
Answer: B
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Solve using the addition and multiplication principles together.2r + 2 = 12
A. 4 B. 12 C. 5 D. 8
Provide an appropriate response.Use a calculator to evaluate log7 11 to four decimal places.
A. 1.2323 B. 1.8865 C. 0.8115 D. 0.1963
The owner of a luxury motor yacht that sails among the 4,000 Greek islands charges $390/person/day if exactly 20 people sign up for the cruise. However,if more than 20 people sign up (up to the maximum capacity of 90) for the cruise, then each fare is reduced by $3 for each additional passenger. ? Assuming at least 20 people sign up for the cruise, determine how many passengers will result in the maximum revenue for the owner of the yacht. What is the maximum revenue? What would be the fare/passenger in this case? ?
A. 75; $16,875; $225 B. 80; $16,875; $215 C. 75; $17,375; $225 D. 80; $17,375; $215
Assume that the matrix A is row equivalent to B. Find a basis for the row space of the matrix A. A = 
, B = 
A. {(1, 3, -4, 0, 1), (0, -2, 3, 2, -6), (0, 0, -8, -11, 25), (0, 0, 0, 0, 0)} B. {(1, 3, -4, 0, 1), (0, -2, 3, 2, -6), (0, 0, -8, -11, 25)} C. {(1, 0, 0, 0), (3, -2, 0, 0), (-4, 3, -8, 0)} D. {(1, 3, -4, 0, 1), (2, 4, -5, 2), -4, (1, -5, 0, -3, 2), (-3, -1, 8, 3, -4)}