Factor completely.z4 - 12z2 + 36
A. (z - 6)2
B. (z + 6)2
C. (z2 + 6)2
D. (z2 - 6)2
Answer: D
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Graph the function f(x) over the given interval. Partition the interval into 4 subintervals of equal length. Then add to your sketch the rectangles associated with the Riemann sum 
, using the indicated point in the kth subinterval for ck.f(x) = cos x + 1, [0, 2?], left-hand endpoint
A. 
B. 
C. 
D. 
An initial deposit of $26,000 grows at an annual rate of 7% for 20 years. Compare the final balances resulting from continuous compounding and annual compounding. Round the answers to the nearest cent.
A. $100,610.89 from annual compounding; $105,433.70 from continuous compounding B. $100,611.80 from annual compounding; $105,435.20 from continuous compounding C. $100,613.85 from annual compounding; $105,455.20 from continuous compounding D. $100,608.80 from annual compounding; $105,437.25 from continuous compounding
In a school survey, students showed these preferences for instructional materials. Answer the question.
About how many students would you expect to prefer lectures in a school of 900 students?
A. About 18 students B. About 324 students C. About 180 students D. About 162 students
Find the x- and y-intercepts for the equation. Then graph the equation.4x - 8y = 8
A. (-1, 0), (0, 2)
B. (1, 0), (0, -2)
C. (-2, 0), (0, 1)
D. (2, 0), (0, -1)