Write a formula for the general term (the nth term) of the geometric sequence.4, 12, 36, 108, 324, . . .
A. an = 4(3)n
B. an = 4(3)n - 1
C. an = a1 + 3n
D. an = 4(3n)
Answer: B
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Which of the following is an important strategy to use in lessons involving manipulatives?
a. Provide sufficient time for students to work through problems b. Demonstrate precisely what students are to do with the manipulatives and have students practice it repeatedly c. Withdraw all teacher support when students are solving open-ended problems d. All of the above e. None of the above
Factor completely. If unfactorable, indicate that the polynomial is prime.(a + b)x2 - 5(a + b)x - 24(a + b)
A. (ax + 3b)(ax - 8b) B. prime C. (a +b)(x - 3)(x + 8) D. (a + b)(x + 3)(x - 8)
Evaluate the integral.
A. 4i + 
j + 9(1 + 
)k
B. 4i + 
j + 9(1 - 
)k
C. 4i + 
j + 9(1 - 
)k
D. 4i + 
j + 9(1 + 
)k
Add. Write a mixed numeral for the answer.
+ 3
+ 
A. 14
B. 14
C. 13
D. 13