Express the sum using summation notation. Use 1 as the lower limit of summation and i for the index of summation.3 + 6 + 9 + . . . + 21
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Solve by any method. If there is not one solution to a system, state why.y - 2x = 44y = 8x + 16
A. (1, 1) B. No solution, inconsistent system C. (-1.5, -1) D. Infinite number of solutions, dependent equations
Mathematics
Determine the end behavior, the y-intercept, all real zeros, and at least one test value between each intercept. Then connect the points with a smooth curve.f(x) = x5 + 4x4 - 4x3 - 16x2
What will be an ideal response?
Mathematics
Find an equation in slope-intercept form for the nonvertical lines. Write the vertical lines in the form x = h.Passing through (-7, 8) and (-1, -3)
A. y = 
x - 
B. y = - 
x - 
C. y = - 
x - 
D. y = 
x - 
Mathematics
Give the domain of the function.f(x) = (-x - 9)1/2
A. [-9, ?) B. (-?, -9] C. (-?, 9] D. [9, ?)
Mathematics