Multiply.(5x - 6)2
A. 5x2 - 60x + 36
B. 25x2 - 60x + 36
C. 25x2 + 36
D. 5x2 + 36
Answer: B
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Solve the problem.A data set consists of 139 test scores. Over a long period it has been found that the mean and standard deviation for these scores are known and that the scores are normally distributed. How many scores within this data set should lie between the mean and two standard deviations below the mean? Round your answer to the nearest whole number.
A. 47 B. 69 C. 133 D. 66
Solve the problem.A force of 
will stretch a rubber band 
. Assuming Hooke's law applies, how much work is done on the rubber band by a 
force?
A. 0.135 J B. 0.015 J C. 1350 J D. 0.045 J
Solve the problem.Find the missing length in the following right triangle. If necessary, round to the nearest tenth. 
A. 12 cm B. 14.5 cm C. 72.5 cm D. 145 cm
Determine whether the graph is the graph of a function. 
A. function B. not a function