Use modular arithmetic to find the answer.Fill in the blank so that the answer is nonnegative and the least possible number.20 ? ___ (mod 5)
A. 6
B. 2
C. 4
D. 0
Answer: D
Mathematics
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Evaluate the improper integral or state that it is divergent. 
A. 9 ln 
B. 
?
C. 
?
D. 
2
Mathematics
Solve the problem.From a point on a river, two boats are driven in opposite directions, one at 9 miles per hour and the other at 11 miles per hour. In how many hours will they be 40 miles apart?
A. 2 hr B. 1 hr C. 4 hr D. 3 hr
Mathematics
Solve.Ms. Larson was not able to sell her house for $190,000, so she lowered the price to 
. What was the percent of decrease?
A. 3700% B. 2.6% C. 97.4% D. 2.7%
Mathematics
Decompose v into two vectors v1 and v2, where v1 is parallel to w and v2 is orthogonal to w.v = 3i + 2j,
w = 3i + j
A. v1 = + 
i + 
j, v2 = - 
i + 
j
B. v1 = + 
i + 
j, v2 = - 
i + 
j
C. v1 = + 
i + 
j, v2 = 
i + 
j
D. v1 = + 
i + 
j, v2 = 
i + 
j
Mathematics