Ive been at this for abt 30 min. help?

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.

Segment xy is dilated through point m with a scale factor of 2. which segment shows the correct result of the dilation

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left