Hcf 32,48,72 I’m struggling

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.

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 9 + 12x + 4x^2