PLz help me Grayson buys cheese and lemons at the store.
He pays a total of $25.81.
He pays a total of $6.55 for the cheese.
He buys 3 bags of lemons that each cost the same amount.

Write and solve an equation which can be used to determine xx, how much each bag of lemons costs.

Equation:
x =

A. find the power of the test, when the null hypothesis assumes a population mean of mu = 450, with a population standard deviation of 156, the sample size is 5 and the true mean is 638.47 with confidence intervals of 95 b. find the power of the test, when the null hypothesis assumes a population mean of mu = 644, with a population standard deviation of 174, the sample size is 3 and the true mean is 744.04 with confidence intervals of 95% c. find the power of the test, when the null hypothesis assumes a population mean of mu = 510, with a population standard deviation of 126, the sample size is 10 and the true mean is 529.44 with confidence intervals of 95