Express the sum using summation notation. Use a lower limit of summation not necessarily 1 and k for the index of summation.9 + 12 + 15 + 18 + . . . + 33
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Evaluate the expression for the given value of x. ? -2x0, x = 20 ?
A. -40 B. -2 C. 40 D. 2 E. 4
Mathematics
Find a linear equation whose graph has the indicated slope and passes through the given point.slope -6, point (-2, -6)
A. y = 6x - 6 B. y = -6x + 18 C. y = 6x + 6 D. y = -6x - 18
Mathematics
Solve the problem. Round your answer, if appropriate.A man 6 ft tall walks at a rate of 3 ft/sec away from a lamppost that is 23 ft high. At what rate is the length of his shadow changing when he is 70 ft away from the lamppost? (Do not round your answer)
A. 35 ft/sec
B. 
ft/sec
C. 
ft/sec
D. 
ft/sec
Mathematics
Determine whether the pair of fractions is equivalent.
and 
A. not equivalent B. equivalent
Mathematics