Solve the system of equations using substitution.
A. x = 
, y = 
; x = - 
, y = 0
or 
, 
B. x = 
, y = 
; x = 1, y = 5
or 
, (1, 5)
C. x = - 
, y = 2; x = 1, y = 5
or 
, (1, 5)
D. x = 
, y = 6; x = - 
, y = 
or 
), 
Answer: D
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Factor completely. If a polynomial cannot be factored, say it is prime.-16x3 + 44x2 - 10x
A. x(2x - 5)(-8x + 2) B. -2(2x2 - 5)(4x - 1) C. -2x(2x - 5)(4x - 1) D. x(-4x + 10)(4x - 1)
Write the series in summation notation. Use the index i and let i begin at 1 in each summation.0 + 2 + 6 + 12 + 20
A. 
B. 
C. 
D. 
Solve the absolute value equation.
= 
A. x = 9, 
B. x = 
C. x = 
, 27
D. x = 
, 27
Solve the problem.The following data represents the average monthly minimum temperature for a certain city in California. 
Draw a scatter diagram of the data for one period. Find a sinusoidal function of the form 
that fits the data. Draw the sinusoidal function on the scatter diagram. Use a graphing utility to find the sinusoidal function of best fit. Draw the sinusoidal function of best fit on the scatter diagram.
What will be an ideal response?