E=mc² m=3 c=6 solve for E

Which equation and solution can be used to solve this problem? thirteen less than a number is sixteen. 13-n=16: add 13 to both sides. the answer is 29. n+13=16: subtract 13 from both sides. the answer is 3. n+16=13 subtract 13 from both sides. the answer is 3. n-13=16: add 13 to both sides. the answer is 29.

How do you create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1?

Evaluate cos2θ for cosθ = square root of 3/2