Classify the angle as acute, right, obtuse, or straight.
A. Obtuse
B. Straight
C. Acute
D. Right
Answer: B
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Express the integrand as a sum of partial fractions and evaluate the integral.
A. 2ln
+ 4ln
+ C
B. 3ln
- 4ln
+ C
C. 2ln
+ 4ln
+ C
D. ln
+ C
Factor the polynomial completely.(x + 2)2 - 9(x + 2) + 20
A. (x - 2)(x - 3) B. (x2 - 2x + 4)(x2 - 2x + 5) C. (x2 + 2x - 4)(x2 + 2x - 5) D. (x + 6)(x + 7)
Solve the problem.Between 7:00 AM and 8:00 AM, trains arrive at a subway station at a rate of 10 trains per hour 
per minute). The following formula from statistics can be used to determine the probability that a train will arrive within t minutes of 7:00 AM. F(t) = 1 - e-0.17tDetermine how many minutes are needed for the probability to reach 60%.
A. 2.02 min B. 5.25 min C. 7.34 min D. 5.39 min
Solve by factoring.x2 + 3x = 40
A. {8, 5} B. {-5, 8} C. {-8, 5} D. {-8, -5}