How do you solve a monomials when there is a number in front of the parentheses

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.

Which of the choices shown could be used to prove that aacp=abcp ?

Given: pqrs is a parallelogram prove: pr and qs bisect each other at t