How to find the confidence interval of 90% or 95% for any given distribution scenario?

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.

Adriveway is 40 yards long about how many meters long is it

If f(x) = 2x + 8 and g(x) = x4, what is (gº)?