Your scores on six science tests were 98, 89, 98, 83, 87, and 80. Find the standard deviation of your scores. Round your answer to two decimal places.
A) 16.82
B) 282.83
C) 25.92
D) 21.12
E) 286.83
A) 16.82
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Solve.20x(x - 5) + 40 = -55(2x - 1) + 15
A. -5, 
B. -6, 1
C. - 1, 
D. - 
, 1
Solve the problem.Sue wants to put a rectangular garden on her property using 70 meters of fencing. There is a river that runs through her property so she decides to increase the size of the garden by using the river as one side of the rectangle. (Fencing is then needed only on the other three sides.) Let x represent the length of the side of the rectangle along the river. Express the garden's area as a function of x.
A. A(x) = 34x - 
x2
B. A(x) = 36x - 2x2
C. A(x) = 35x - 
x2
D. A(x) = 35x2 - x
Find the solution set of the system by graphing the equations by hand. If the system is inconsistent or dependent, say so.y = 3x + 3y = -2x - 7
A. (-2, -2) B. (2, 3) C. (-2, -3) D. (-2, 3)
Graph the function by starting with the graph of the basic function and then using the techniques of shifting, compressing, stretching, and/or reflecting.f(x) = 
A. 
B. 
C. 
D. 