Find the perfect square trinomial whose first two terms are given.x2 - 4x
A. x2 - 4x + 16
B. x2 - 4x + 4
C. x2 - 4x + 2
D. x2 - 4x - 4
Answer: B
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Solve the problem.A window is in the form of a rectangle surmounted by a semicircle. The rectangle is of clear glass, whereas the semicircle is of tinted glass that transmits only one-fifth as much light per unit area as clear glass does. The total perimeter is fixed. Find the proportions of the window that will admit the most light. Neglect the thickness of the frame.
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Provide an appropriate response.Graph the equation -y = 
x - 3 using the intercepts procedure.
A. 
B. 
C. 
D. 
Write the binomial expansion of the expression.(-4m + 2n)4
A. 256m4 - 8192m3n - 2304m2n2 - 128mn3 - 16n4 B. 256m4 - 512m3n - 384m2n2 - 128mn3 - 16n4 C. 256m4 - 512m3n + 384m2n2 - 128mn3 + 16n4 D. 256m4 - 8192m3n + 2304m2n2 - 128mn3 + 16n4
Solve the problem.The average total sales of individuals in the sales department at a paper company has decreased approximately linearly from $154 thousand in year 1 to $127 thousand in year 5. Let s be the average total sales (in thousands of dollars) at t years. Find an equation of a linear model to describe the data.
A. s = 6.75t + 147.25 B. s = -6.75t + 147.25 C. s = -6.75t + 160.75 D. s = -6750t + 154,000