Perform the indicated operations and simplify the result. Leave the answer in factored form.
- 
A. 
B. - 
C. 
D. - 
Answer: A
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Simplify the expression. Assume that all variables are positive when they appear.
- 
A. 2 - 3
B. 5
C. 3
- 2
D. 2
- 3
Use the formula for the sum of the first n terms of a geometric sequence to solve.Find the sum of the first 14 terms of the geometric sequence: 
, - 
, 
, - 
, 
, . . . .
A. - 
B. - 
C. - 
D. - 
Solve the problem.A rumor is spread at an elementary school with 1200 students according to the model 
where N is the number of students who have heard the rumor and d is the number of days that have elapsed since the rumor began. How many students will have heard the rumor after 5 days?
Fill in the blank(s) with the appropriate word(s).
Factor by grouping.4y6 - y5 - 4y + 1
A. (y5 - 1)(4y - 1) B. (y5 - 1)(4y + 1) C. (y5 + 1)(4y - 1) D. (y5 + 1)(4y + 1)