Determine the domain of the function.f(x) = 
A. {x? x ? -1}
B. {x? x ? 1, x ? -1}
C. {x? x ? 1}
D. {x? x is a real number}
Answer: C
Mathematics
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Find the solution.4(x + 4) = 28
A. 20 B. 3 C. 11 D. -3
Mathematics
Identify the numerator and the denominator of the fraction.
A. Numerator 2
Denominator 7
B. Numerator 7
Denominator 2
C. Numerator 9
Denominator 1
D. Numerator 
Denominator 7
Mathematics
Find the sum Sn of the first n terms of the geometric sequence.8, 
, 
, 
, . . . ; n = 7
A. 8.808088 B. 8.088888 C. 8.888888 D. 0.888888
Mathematics
Solve.The perimeter of a square is 52 units. Write and solve an equation to find the length of one side, s, of the square.
A. s2 = 52; s = 26
B. 4s = 52; s = 13
C. 
= 52; s = 13
D. 4s = 52; s = 169
Mathematics