Perform the indicated operation and simplify.
+ 
A. 
B. 
C. 
D. 
Answer: B
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In the expression -62, what is the base?
Fill in the blank(s) with the appropriate word(s).
Evaluate.
? 
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?
Solve.How many 4-letter codes can be formed with the letters 
with repetition?
A. 336 B. 56 C. 4096 D. 240