Simplify the expression.
?
?
A. 
B. 0
C. ?
D. ?
E. already simplified
Answer: C
Mathematics
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State the domain of the given function.y = 
A. All real numbers x > - 7 B. 7 C. All real numbers except 7 D. All real numbers
Mathematics
Find the coordinates of the vertices and foci of the ellipse.y2 = 4(1 - x2)
A. V(-4, 0), V(4, 0), F(-3, 0), F(3, 0)
B. V(-2, 0), V(2, 0), F
, F
C. V(0, -2), V(0, 2), F
, F
D. V(0, -4), V(0, 4), F(0, -3), F(0, 3)
Mathematics
Translate to a proportion. Do not solve.What is 16% of 87?
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Mathematics
Use a graphing utility to solve the system of linear equations and give the solution of the system.
A. 
x = 9, y = 5, z = 1
B. 
x = 
, y = - 
, z = 9
C. 
x = 1, y = 5, z = 9
D. 
x = 
, y = - 
, z = 9
Mathematics