Evaluate the following:
1. 
2. 
3. 
1. 22.5
2. 
3. In 2
Mathematics
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Simplify the rational expression.
A. 
B. 
C. 
D. 
Mathematics
Write a chain rule formula for the following derivative.
for w = f(x, y, z); x = g(r, s, t), y = h(r, s, t), z = k(r, s, t)
A. 
= 
+ 
B. 
= 
+ 
+ 
C. 
= 
+ 
+ 
D. 
= 
+ 
+ 
Mathematics
Add or subtract the rational expressions. Reduce to simplest terms.
- 
A. 0
B. 6
C. 
D. 
Mathematics
Find the equation of the line passing through the indicated two points. Write the equation in point-slope form.(-7, 8) and (4, -8)
A. y - 8 = 
(x + 7) or y + 8 = 
(x - 4)
B. y - 8 = - 
(x + 7) or y + 8 = - 
(x - 4)
C. y + 8 = 
(x - 7) or y - 8 = 
(x + 4)
D. y + 8 = - 
(x - 7) or y - 8 = - 
(x + 4)
Mathematics