Pedro buys 7.5 gallons of gas for $28.49 how much does each gallon of gas cost?

Let the mean of the population be 38 instances of from 6" - 9" hatchings per nest, and let the standard deviation of the mean be 3. what sample mean would have a confidence level of 95% or a 2.5% margin of error?

If a baby uses 15 diapers in 2 days, how many diapers will the baby use in a year?

Find the value of p for which the polynomial 3x^3 -x^2 + px +1 is exactly divisible by x-1, hence factorise the polynomial