What is the solution to this equation x+4(x+5)=4

The contents of 3838 cans of coke have a mean of x¯¯¯=12.15x¯=12.15. assume the contents of cans of coke have a normal distribution with standard deviation of σ=0.12.σ=0.12. find the value of the test statistic zz for the claim that the population mean is μ=12.μ=12.

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

A50% increase followed by 33 1/2% decrease