Write out the sum. Do not evaluate.
A. 2 + 22 + 23 + ... + 2n+1
B. 22 + 23 + 24 + ... + 2n
C. 2 + 22 + 23 + ... + 2n
D. 22 + 23 + 24 + ... + 2n+1
Answer: D
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Solve the problem.
What are the odds in favor of spinning a D on this spinner?
A. 5:1 B. 1:7 C. 6:1 D. 1:6
Factor the expression completely, if possible.x4 - 81
A. (x + 3)2(x - 3)2 B. (x2 + 9)(x + 3)(x - 3) C. (x2 - 9)(x + 3)(x - 3) D. Does not factor
Evaluate the expression for the given values of the variables. -4.1x
for x = 9.61
A. -0.39401 B. -394.01 C. -39.401 D. -3.9401
Solve the problem using the vector form v = 
[(cos ?)i + (sin ?)j].An airplane flies 10° for 180 mi, and then 315° for 95 mi. How far is the plane from the starting point, and in what direction?
A. 247 mi, 352° B. 275 mi, 2° C. 275 mi, 307° D. 247 mi, 307°