Perform the indicated operation.8 tons 638 lb - 5 tons 911 lb
A. 3 tons 273 lb
B. 2 tons 1727 lb
C. 13 tons 1549 lb
D. 3 tons 1727 lb
Answer: B
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Use a graphing calculator to determine which expression completes the identity.The expression 
is to be the left hand side of an equation that is an identity. Which one of the following four expressions can be used as the right hand side of the equation to complete the identity?
A. tan x B. csc x C. cos x D. sec x
Consider only the discriminant, b2 - 4ac, to determine whether one real-number solution, two different real-number solutions, or two different imaginary-number solutions exist.3x2 = -3x - 6
A. One real solution B. Two different real-number solutions C. Two different imaginary-number solutions
Multiply.
A. x2 + 
B. x2 - 
x - 
C. x2 - 
x + 
D. x2 - 
x + 
Find the sum of the first five terms of the geometric sequence.a = -16, r = -4
A. -3280 B. 816 C. 240 D. -10,280