Add or subtract.8i + (-7 - i)
A. -7 + 9i
B. 7 - 7i
C. 7 - 9i
D. -7 + 7i
Answer: D
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Solve the problem.After one round in a card game, your score was 32 points. After the second round, your score was 
How many points did you lose in the second game?
A. -26 points B. -38 points C. 6 points D. 26 points
Find the values of x for which the given function is concave up, the values of x for which the function is concave down, and any points of inflection.y = 7x - x3
A. Concave up for x < 0, and x > 1, concave down for 0 < x < 1, points of inflection at (0, 0), (1, 7) B. Concave up for x < 0, concave down for x > 0, point of inflection at (0, 0) C. Concave down for all x, no points of inflection D. Concave down for x < 0, concave up for x > 0, point of inflection at (0, 0)
2x2 + 10x = - 3
A. 
B. 
C. 
D. 
Determine the number by which both sides of the equation must be multiplied or divided, as specified, to obtain just x on the left side.0.9x = 2; divided
A. 9
B. 
C. 2
D. 0.9