I'm in a rush but please take your time answering! I'm giving out 100 points and I'll give brainliest right away! Thank you!

What is the correlation coefficient between the variables? round to three decimal places. enter your answer in the box

For g(x) = 5x - 3 and h(x) = [tex]\sqrt{x}[/tex], find (g · h)(4)

Do xuan nam isgoing to invest $1000 at a simple interest rate of 4% how long will it take for the investment to be worth $1040?