Find the mean for the sequence of numbers.7, 2, 6, 19, 13, 20, 18, 11
A. 18
B. 12
C. 11
D. 13.71
Answer: B
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Write the improper fraction as a mixed or whole number.
A. 
B. 
C. 
D. 7
Select the correct graph and domain of the function.
?
?
A. ?
Domain: 
B.
Domain: 
C.
Domain: 
D. ?
Domain: 
E.
Domain: 
Solve the problem.The number of centimeters, d, that a spring is compressed from its natural, uncompressed position is given by the formula d = 
, where W is the number of joules of work done to move the spring and k is the spring constant. Solve this equation for W. Use the result to determine the work needed to move a spring 4 centimeters if it has a spring constant of 0.4.
A. W = 2d2k; 12.8 joules
B. W = 
; 3.2 joules
C. W = 
; 0.6 joules
D. W = 
; 80 joules
Solve the system. x- y+ 5z= -25x+ z= 0 x+ 2y+ z= 4
A. {(0, 2, -2)} B. {(0, 0, 2)} C. ? D. {(0, 2, 0)}