The graph of a polar equation is given. Select the polar equation for the graph.
A. r sin ? = -2
B. r = -2
C. r = -4 cos ?
D. r = -4 sin ?
Answer: D
Mathematics
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Evaluate or simplify the exponential expression.120
A. 1 B. -1 C. 0 D. 12
Mathematics
Find the nth term {an} of the geometric sequence. When given, r is the common ratio.6, 3, 
, 
, ...
A. an = 
(6)n-1
B. an = 6 ? 2n-1
C. an = 6 
n-1
D. an = 6 
n-1
Mathematics
Find the average rate of change for the function between the given values.f(x) = -2x + 4; from 1 to 2
A. 2 B. -4 C. 4 D. -2
Mathematics
Translate into an equation, then solve.The perimeter of the triangle is 83 inches. Find the missing length.
a = 15
A. 15 + 31 + x = 98; 52 inches B. 15 + 31 + x = 83; 37 inches C. 31 + x = 83; 52 inches D. 15 + 31 + 83 = x; 129 inches
Mathematics