Find the number of proper subsets of the set.{x | x is a day of the week}
A. 64
B. 128
C. 127
D. 256
Answer: C
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Solve the problem.The graph below shows the first derivative of a function y = f(x). Select a possible graph f that passes through the point P. f'
A. 
B. 
C. 
D. 
Perform the indicated operation. Express your answer in simplest form.
+ 
A. 
B. 
C. 
D. 
Solve the problem.A rumor is spreading across a college campus that there will be no final exams for any classes this semester. At 8 a.m. today, 7 people have heard the rumor. Assume that after each hour, 3 times as many students have heard the rumor. So, for example, 21 people will have heard the rumor by 9 a.m. Let f(t) represent the number of people who have heard the rumor t hours after 8 a.m.i) Find an equation for f.ii) Use f to predict the number of students who will have heard the rumor by 2 p.m.
What will be an ideal response?
Decide if the answer is reasonable or unreasonable by rounding the numbers and estimating the answer. If the answer is not reasonable, find the correct answer.2343.3 ÷ 22.4 = 10.46
A. Unreasonable, should be 1046 B. Reasonable C. Unreasonable, should be 104.6 D. Unreasonable, should be 1.046