Identify the open intervals where the function is changing as requested.Increasing
A. (-1, 0)
B. (0, 3)
C. (-?, 0)
D. (-?, -1)
Answer: B
Mathematics
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Find the sum of the first n terms of the following arithmetic sequence:Second term is 13, third term is 21; n = 17
A. 1,219 B. 1,173 C. 1,085 D. 1,112
Mathematics
Solve the equation.9x - (4x - 1) = 2
A. 
B. - 
C. - 
D. 
Mathematics
Find the missing numerator and denominator.
÷ 
= 
A. 
B. 
C. 
D. 
Mathematics
Solve the problem. Use a Venn diagram to find your answer.The subsets A, B, and C of the universe U satisfy the following conditions:n(A) = 85n(B) = 93n(C) = 87n(A ? B) = 17n(A ? C) = 19n(B ? C) = 13n(A ? B ? C) = 11n(
? 
? 
) = 171Find n(U).
A. 227 B. 312 C. 408 D. 398
Mathematics