Simplify the following by combining like terms.- x2 - x +  + x2 - x - 

A. - x2 - x - 
B. - x2 - x + 
C. - x6 + 
D. - x4 - x2 + 


Answer: B

Mathematics

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Suppose ? is an angle in standard position. Given either a point on the terminal side of ? or an equation of the terminal side of ?, give the exact value of the indicated trigonometric function(s). (6, 8); find cos ?.

A.
B.
C.
D.

Mathematics

Find the domain and range of the function.f(x) = -2x2 - 36x - 167

A. Domain: (-?, ?); Range: (-?, 9] B. Domain: (-?, ?); Range: (-?, -5] C. Domain: (-?, -5] ; Range: [9, ?) D. Domain: (-?, -5]; Range: [0, ?)

Mathematics

Graph the function, showing all asymptotes (those that do not correspond to an axis) as dashed lines. List the x- and y-intercepts.f(x) = 

A. No x-intercepts, no y-intercepts ;

B. No x-intercepts, no y-intercepts ;

C. No x-intercepts, no y-intercepts ;

D. No x-intercepts, no y-intercepts ;

Mathematics

Solve the linear programming problem.Minimize     4x1 + 5x2subject to   2x1 - 4x2 ? 10   2x1  + x2 ? 15and x1 ? 0, x2 ? 0

A. Minimum = 20 when x1 = 5 and x2 = 0
B. Minimum = 30 when x1 =  and x2 = 0
C. Minimum = 75 when x1 = 0 and x2 = 15
D. Minimum = 33 when x1 = 7 and x2 = 1

Mathematics