What is the trick to adding all the numbers from 1-100?

Ben bowled 124 and 188 in his first two games. what must he bowl in his third game to have an average of at least 160?

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.

What is 1/2 x (6 x 4)+3 + 2 show your work