Solve the equation using the multiplication principle.15 = -3k
A. -5
B. -18
C. 18
D. 1
Answer: A
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Factor the difference of two squares. Assume that variables represent whole numbers.x12 - 36
A. prime B. (x6 + 6)(x6 - 6) C. (x2 + 6)2 D. (x2 - 6)2
Write the event as a set of outcomes.When we roll two dice, the total showing is eight.
A. {(1, 7), (2, 6), (3, 5), (4, 4), (5, 3), (6, 2), (7, 1)} B. {(2, 6), (3, 5), (4, 4), (5, 3), (6, 2)} C. {(2, 6), (3, 5), (5, 3), (6, 2)} D. {(2, 6), (3, 5), (4, 4)}
Find the domain and range and describe the level curves for the function f(x,y).f(x, y) = 
A. Domain: all points in the xy-plane; range: real numbers > 0; level curves: ellipses 
B. Domain: all points in the xy-plane; range: all real numbers; level curves: ellipses 
C. Domain: all points in the xy-plane except (0, 0); range: all real numbers; level curves: ellipses 
D. Domain: all points in the xy-plane except (0, 0); range: real numbers > 0; level curves: ellipses 
Write an equation to describe the variation. Use k for the constant of proportionality.p varies directly as the square of q and inversely as the cube of r.
A. p + q2 - r3 = k
B. p = 
C. pq2r3 = k
D. p = 