Use the summation properties and rules to evaluate the series. The following rules may be needed: 
. 
A. - 18
B. - 90
C. - 60
D. - 30
Answer: C
Mathematics
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Factor the polynomial.27a3 - 125b3
A. (3a + 5b2)(9a2 - 15ab + 25b2) B. (3a - 5b)(9a2 + 25b2) C. (27a - 5b)(a2 + 15ab + 25b2) D. (3a - 5b)(9a2 + 15ab + 25b2)
Mathematics
Use the distributive property to rewrite the sum or difference as a product. Simplify the answer if possible.2c + 7c
A. 5c B. -5c C. 14c D. 9c
Mathematics
Solve the problem.In a survey about the number of siblings of college students, the following probability table was constructed: 
What is the probability that a student has at most 2 siblings?
A. 0.43 B. 0.57 C. 0.75 D. 0.25
Mathematics
Determine whether the given function is one-to-one. If so, find a formula for the inverse.f(x) = (x + 5)2
A. Not a one-to-one function
B. f-1(x) = 
C. f-1(x) = 
D. f-1(x) = 
- 5
Mathematics