Calculate the direction of 
and the midpoint of line segment P1P2.P1(-5, -7, 2) and P2(-3, -13, -1)
A. 
i - 
j - 
k; 
B. 
i + 
j + 
k; 
C. 
i - 
j - 
k; 
D. 
i - 
j - 
k; 
Answer: C
Mathematics
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Solve the problem.The number of periods needed to double an investment when a lump sum is invested at 11%, compounded semiannually, is given by n = 
. Find n, rounded to the nearest tenth.
A. 15.9 periods B. 17.9 periods C. 12.9 periods D. 8.9 periods
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Solve the inequality algebraically.3x - 8 > -23
A. x > -15
B. x > -5
C. x > - 
D. x < 5
Mathematics
Find an equation for the hyperbola described.center at (1, 6); focus at (-6, 6); vertex at (0, 6)
A. (x - 1)2 - 
= 1
B. (x - 6)2 - 
= 1
C. 
- (y - 1)2 = 1
D. 
- (y - 6)2 = 1
Mathematics
Determine whether the graph of the quadratic function opens up or down.f(x) = -x2 - 7x + 2
A. up B. down
Mathematics