Solve the problem.Find the 16th triangular number that corresponds to the following dot sequence. 
A. 136
B. 257
C. 120
D. 128
Answer: A
Mathematics
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Solve the problem.Six times some number added to 7 is equivalent to 25 added to the product of 3 and the number.
A. 6 B. 18 C. -18 D. -6
Mathematics
Graph.f(x) = (x - 4)2 + 1
A. 
B. 
C. 
D. 
Mathematics
Evaluate the function at the indicated value.Find f(-2) when f(x) = 
.
A. 2
B. 
C. - 4
D. - 10
Mathematics
Find the midpoint of the line segment joining the points P1 and P2.P1 = (3, 1); P2 = (4, -1)
A. 
B. 
C. 
D. 
Mathematics