One pound of almonds plus one pound of peanuts costs $16. One-half pound of
almonds plus one-third pound of peanuts
costs $7. Which system of equations
can be used to determine a, the price of
almonds per pound, and p, the price of
peanuts per pound?

Select the quadratic that has root x = 8 and x = -5

Asalad dressing recipe calls for 1 teaspoon of vinegar and three tablespoons of olive oil to only make 1/3 of the recipe for a single portion how much of each ingredient would you need

Arandom sample of 15 observations is used to estimate the population mean. the sample mean and the standard deviation are calculated as 172 and 63, respectively. assume that the population is normally distributed. a. with 99 confidence, what is the margin of error for the estimation of the population mean? b. construct the 99% confidence interval for the population mean. c. construct the 95% confidence interval for the population mean. d. construct the 83% confidence interval for the population mean. hint: you need to use excel function =t.inv.2t to find the value of t for the interval calculation.