Find the domain of the composite function f ? g.f(x) = x + 4; g(x) = 
A. {x 
B. {x 
C. {x 
D. {x 
Answer: D
Mathematics
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Find the standard-form equation of the ellipse centered at the origin and satisfying the given conditions.An ellipse with vertices (0, ±9) and foci at 
.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics
Follow the proper order of operations to evaluate the following.(-2 - 3)(-4 + 7) - 72
A. 34 B. 49 C. -64 D. 3
Mathematics
Find the weighted mean. Round to the nearest tenth.
A. 230.1 B. 307.7 C. 253.2 D. 54.2
Mathematics
Evaluate the following expression.
Mathematics