Dan earns £7.90 per hour. How much will he earn for 6 hours work?

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 expression can be used to determine the slope of the line that passes through the points -6, three and one, -9

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?