Ill is at a shirt sale where he can buy one and get a second one for 40 percent off. he wants to buy two shirts priced at $29 each. how much will he pay? cost after discount = (2 × list price) – (list price × discount percentage)

a.
$34.80
b.
$40.60
c.
$46.40

(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.)