Emily spends a winter day recording the temperature once every three hours for science class. At 9 am, the temperature was -4.7°F. Between 9am and noon, the
temperature increased by 17.4°F. Between noon and 3pm, the temperature dropped
8.9°F. Between 3pm and 6pm, the temperature decreased by 15-3°F. What was the
temperature at 6pm?

You are a clerk at convenience store. a customer owes 11.69 for a bag of potatoes chips. she gives you a five dollar bill. how much change should the customer receive?

Olga used 100 ounces of flour to make 225 muffins. how many ounces of flour will be used to make 300 muffins?

(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.)