Write the sum using summation notation, assuming the suggested pattern continues.5 - 15 + 45 - 135 + ...
A. 
B. 
C. 
D. 
Answer: C
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Determine the principal value without using a calculator.
2
A. 8 B. Not real number C. -8 or 8 D. -8
Solve the problem.On a holiday weekend, Nancy drove 1
hours in rush-hour traffic. When traffic eased up, she was able to increase her speed by 44 miles per hour and drove another 4
hours. If the entire trip was 354 miles, how fast did she drive in rush-hour traffic?
A. 27
mph
B. 27 mph
C. 28 mph
D. 26 mph
Solve the equation.-20 - 8x = 5 - 3x
A. {-5} B. {4} C. {5} D. {-4}
Identify the exercise as either a permutation (order matters) or combination (order does not matter) counting problem. Do not actually solve the exercise.How many different user ID's can be formed from the letters W, X, Y, Z if no repetition of letters is allowed?
A. Permutation B. Combination