Solve the system of equations.x -y + 3z = 135x+ z = 5x + 2y +z = 9
A. {(5, 2, 0)}
B. {(5, 0, 2)}
C. {(2, 0, 5)}
D. {(0, 2, 5)}
Answer: D
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Solve the problem.In the formula N = Iekt, N is the number of items in terms of an initial population I at a given time t and k is a growth constant equal to the percent of growth per unit time. There are currently 54 million cars in a certain country, increasing by 3.3% annually. How many years will it take for this country to have 82 million cars? Round to the nearest year.
A. 13 yr B. 8 yr C. 101 yr D. 4 yr
State whether the given relation is a function.Consider a relation whose domain is all students attending the University of Ohio and whose range values are a set of each students' teachers. Is this relation a function?
A. Yes B. No
Solve.k + 
= 
A. k = 1
B. k = - 
C. k = 
D. k = 
Determine whether the lines are parallel, perpendicular, or neither.y = 2x - 2y = - 
x + 7
A. parallel B. perpendicular C. neither