What is the product of (a+b) (a-b)

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.

The triangles are similar. what is the value of x? show your work.

The table shows the balance of a money market account over time. write a function that represents the balance y(in dollars) after t years.