Express the solution set of the inequality in interval notation.x ? 18
A. (18, ?)
B. (-?, 18]
C. [18, ?)
D. (-?, 18)
Answer: B
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Solve the problem.The following table shows a recent state income tax schedule for married couples filing a joint return in State X.State X Income TaxSCHEDULE I - MARRIED FILING JOINTLY
(i) Write a piecewise definition for the tax due T(x) on an income of x dollars. (ii) Graph T(x). (iii) Find the tax due on a taxable income of $50,000. Of $95,000. 
A. (i)
T(x) = 
(ii) 
(iii) $2385; $5697.50
B. (i)
T(x) = 
(ii) 
(iii) $2350; $5322.50
C. (i)
T(x) = 
(ii) 
(iii) $2375; $5637.50
D. (i)
T(x) = 
(ii) 
(iii) $2075; $5270.50
Find the difference.
- 
A. - 
B. 
C. 
D. - 
Factor completely, or state that the polynomial is prime.x3 - 4x
A. x(x + 2)(x - 2) B. x(x - 2)2 C. (x2 + 2)(x - 2) D. prime
Simplify.
2 
2
A. 
x10y8z10
B. 
x16y12z16
C. - 
x16y12z16
D. 
x10y8z10