Evaluate the expression 7x2y, when x = 5 and y = 3. 210 315 525 728

Which best describes the strength of the correlation, and what is true about the causation between the variables? it is a weak negative correlation, and it is not likely causal. it is a weak negative correlation, and it is likely causal. it is a strong negative correlation, and it is not likely causal. it is a strong negative correlation, and it is likely causal.

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*

Compute the standard deviation of the following set of data to the nearest whole number. 10, 10, 15, 20, 25