Solve the pair of linear equations by addition.
If there is one common solution, select the correct ordered pair of the point of intersection. If there is no one common solution, select either parallel or coincide for the correct answer.
A. 
B. 
C. 
D. The lines are parallel.
E. The lines coincide.
Answer: A
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If r(t) is the position vector of a particle in the plane at time t, find the indicated vector.Find the acceleration vector.r(t) = (6 ln(9t))i + (3t3)j
A. a = 
t-2i + 18tj
B. a = - 
i + 18tj
C. a = 
i + 9tj
D. a = - 
t-2i + 18tj
Solve the problem.Suppose we roll a regular six-sided die twice and note whether it lands as an even number (E) or an odd number (O) on each roll. The sample space for this random experiment is
A. {E, O}. B. {E, E, O, O}. C. {EE, EO, OO}. D. {EE, EO, OE, OO}. E. none of these
Determine if the following is a function or not. The set of ordered pairs {(10, 15), (14, 19), (15, 20), (16, 25)} in the set of whole numbers.
A. Yes B. No
Solve the system of equations numerically (table of values).y = - 
x - 
y = -6x + 32
A. (-6, -4) B. (6, -4) C. (6, 5) D. (4, 8)