Decide whether the composite functions, f ? g and g ? f, are equal to x.f(x) = 
, g(x) = x
A. No, no
B. Yes, no
C. No, yes
D. Yes, yes
Answer: A
Mathematics
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Use the following definitions to determine if the statement is true or false. N = {x : x is a natural number}I = {x : x is an integer}R = {x : x is a real number}W = {x : x is a whole number}Q = {x : x is a rational number}N is a subset of N.
A. True B. False
Mathematics
Evaluate the polynomial with the given replacement value.-7x2 + 10x + 8, x = 2
A. -4 B. 14 C. 0 D. -10
Mathematics
Use substitution to determine whether the system of linear equations has no solutions, one solution, or infinitely many solutions.x - 4 = yy + 9 = x
A. No solutions B. Infinitely many C. One
Mathematics
Solve the system of linear inequalities.x - y ? 0 y ? -4x + 4
A. 
B. 
C. 
D. 
Mathematics