How many solutions does 4.5z= 4.5z - 4.25 +6.25 have?

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.

You can find the constant of proportionality by finding the ratio of

17 in long 1.3 ft wide and 8in high what is the volume