Please Answer these two questions!! What is the value of the expression shown below?

6 + (9 − 1) 2 ÷ 4 ⋅ 1 over 2 whole to the power of 4 (5 points)

A. 7

B. 9

C. 18

D. 22

Which expression represents the product of 6 and y? (5 points)

A. 6y

B. 6 + y

C. 6 − y

D. 6 over y

Please help and thank you!!

(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.)