If 2log (x+3)=log81 then find x

Evaluate the dot product of (3,-1) and (1,5)

One positive number is 9 more than twice another. if their product is 95, find the numbers

Suppose sat writing scores are normally distributed with a mean of 497 and a standard deviation of 109. a university plans to award scholarships to students whose scores are in the top 2%. what is the minimum score required for the scholarship? round your answer to the nearest whole number, if necessary.