if there is one store and they are selling 10 pens for 8.99 and they are selling 25 pens for 19.75 witch one is better explian

(b) suppose that consolidated power decides to use a level of significance of α = .05, and suppose a random sample of 100 temperature readings is obtained. if the sample mean of the 100 temperature readings is x⎯⎯ = 60.990, test h0 versus ha and determine whether the power plant should be shut down and the cooling system repaired. perform the hypothesis test by using a critical value and a p-value. assume σ = 5. (round your z to 2 decimal places and p-value to 4 decimal places.)

The equation of a parabola is given. y=18x2+4x+20 what are the coordinates of the focus of the parabola?

You eat $0.85 for every cup of hot chocolate you sell. how many cups do you need to sell to earn $55.25