Solve the problem.In a certain memory experiment, subject A is able to memorize words at a rate given by 
In the same memory experiment, subject B is able to memorize at the rate given by 
How many more words does subject B memorize from t = 0 to t = 18 (during the first 18 minutes)?
A. -17
B. 59
C. -6
D. 53
Answer: C
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Solve the problem.An audio speaker that weighs 50 pounds hangs from the ceiling of a restaurant from two cables as shown in the figure. To two decimal places, what is the tension in the two cables? 
A. Tension in right cable: 35.90 lb; tension in left cable: 41.59 lb B. Tension in right cable: 35.90 lb; tension in left cable: 14.10 lb C. Tension in right cable: 14.10 lb; tension in left cable: 41.59 lb D. Tension in right cable: 41.59 lb; tension in left cable: 35.90 lb
Use the Pythagorean theorem to find the unknown side of the right triangle.
A. 147
B. 7
C. 7
D. 203
Simplify. Write your answer in the form a + bi, where a and b are real numbers.(7 - 3i) + (1 + 6i)
A. -8 - 3i B. 8 - 3i C. -8 + 3i D. 8 + 3i
For the function f, use composition of functions to show that f-1 is as given.
, 
What will be an ideal response?