Find fraction notation for the infinite sum. 0.0126126126 . . .
A. 
B. 
C. 
D. 
Answer: B
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Find the gradient field F of the function f.f(x, y, z) = (x4y2 - y8z3)e-z2
A. F = 4x3i + (8y7 - 2y)j + 2z4e-z2k B. F = 4x3y2i + (8y7z3 - 2x4y)j + (2z2 - 3)y8z2k C. F = 4x3y2e-z2i + (2x4y - 8y7z3)e-z2j + (3 - 2z2)y8z2e-z2k D. F = 4x3y2e-z2i + (2x4y - 8y7z3)e-z2j + y2ze- z2[y6z(2z2 - 3) - 2x4]k
Solve the problem.The graph shows the hours studied and the exam grades obtained on a finite math exam for 8 students. (The two points on the line do not represent any of the eight students.) The line of best fit, the line graphed on the coordinate system, can be used to approximate the test grade the average student receives for the number of hours they study. 
Find the equation of the line of best fit.
A. G = 
x - 50
B. G = 
x + 8
C. G = 
x + 50
D. G = 
x + 50
Change the logarithmic expression to an equivalent expression involving an exponent.logb64 = 3
A. b3 = 64 B. 643 = b C. 3b = 64 D. 64b = 3
Solve the equation by completing the square.x2 + 4x - 21 = 0
A. -14, -7
B. 
, -1
C. 3, -7
D. -3, 7