Which of the following expressions are equivalent to 48a^3-75a? select all that apply. answer 1) 3(48a^3-75a). answer 2) 3a(16a^2-25) answer 3)3a(4a+5)(4a+5) answer 4) 3a(4a+5)(4a-5) answer 5) -3a(25-16a^2) answer 6) -3a(5-4a)(5+4a)

(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.)

Tom travels between the two mile markers shown and then finds his average speed in miles per hour. select the three equations that represent this situation.

Sioux co. replaced the roof on its existing building, therefore increasing the building's life by 10 years. the cost of the roof is considered a(n):