Perform the indicated operations and simplify the result so there are no quotients.
A. 1
B. 1 - sin ?
C. - sec2?
D. 0
Answer: A
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Write sigma notation.
+ 
+ 
+ 
+ 
A. 
B. 
C. 
D. 
Simplify.-8(5x + 10y) + 4(2x + 7y)
A. -32x + 10y + 7 B. -120xy C. -3x - 52y D. -32x - 52y
Identify any horizontal asymptotes in the graph.
A. y = 5 B. y = 7 C. None D. y = -6
An agronomist used four test plots to determine the relationship between the wheat yield y (in bushels per acre) and the amount of fertilizer x (in pounds per acre). The results are shown in the table. ? Fertilizer, x100150 200 250 Yield, y35 44 50 56 ? (I) Use the regression capabilities of a graphing utility or a spreadsheet to find the least squares regression line for the data. ? (II) Estimate the yield for a fertilizer application of 160 pounds per acre. ?
A. (I) 
; (II) 39.10
B. (I) 
; (II) 45.90
C. (I) 
; (II) 44.18
D. (I) 
; (II) 42.32
E. (I) 
; (II) 54.94