Add, subtract, or multiply, as indicated. Express your answer as a single polynomial in standard form.6(1 - y3) - 2(1 + y + y2 + y3)
A. -8y3 - 2 - ay2 - 2y + 4
B. -8y3 - 2y2 - 2y + 4
C. 8y3 - 2y2 - 2y + 4
D. -8y3 + 2y2 - 2y - 4
Answer: B
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Find the work done by F over the curve in the direction of increasing t.F = - 
i + 
j + 
k; C: r(t) = 
i + 
j + 7tk, 0 ? t ? 
A. W = 
+ 
?2
B. W = 
+ 
?2
C. W = 
+ 
?2
D. W = 
+ 
?2
Determine the number of significant digits in the given approximate number.9000.4
A. 3 B. 4 C. 5 D. 2
Solve the problem.The temperature at 5:00 was -6° C. Four hours later, it was -11° C. What was the change in temperature?
A. -5° C B. 5° C C. -17° C D. 17° C
Fill in the blank with one of the words or phrases listed below.
In a system of linear equations in two variables, if the graphs of the equations are different, the equations are 
equations.
A. independent B. dependent C. inconsistent D. consistent