Elwyn averaged 50 mph traveling from denver to minneapolis. returning by a different route that covered the same number of miles, he averaged 55 mph. what is the distance between the two cities to the nearest ten miles if his total traveling time was 32 hr?

What is the expression in factored form? -x^2 + 3x + 28 a. (x-7)(x-4) b. -(x-7)(x+4) c. (x+4)(x+7) d. -(x-4)(x+7)

(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.)

If 3 3/4 lb. of candy costs 20.25 how much would 1lb. of candy cost