Solve.- 
x + 2x = 
x + 
A. 
B. {0}
C. 
D. {18}
Answer: D
Mathematics
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Multiply and simplify. Assume that all variables represent positive real numbers.(3 + 
)(2 + 4
)
A. 18 + 14
B. 18 + 6
C. 60
D. 6 + 18
Mathematics
Find the product.7ax7(2ax3 - 2x2 - 3)
A. 14a2x10 - 14ax9 - 21ax7 B. 14ax21 - 14ax14 - 21ax7 C. -14a2x21 + 14ax14 + 21ax7 D. -14a2x10 + 14ax9 + 21ax7
Mathematics
Find the slope of the line through the pair of points.(2, 5) and (-7, 5)
A. 4 B. 0 C. 13 D. 1
Mathematics
Use a graphing calculator to graph the piecewise-defined function, using the window indicated.f(x) = 
; window [-4, 4] by [-4, 4]
A. 
B. 
C. 
D. 
Mathematics