Write the following inequality in slope-intercept form:
-6x + 2y ≤ 42
a) y ≤ 3x - 21
b) y ≤ 3x + 21
c) y ≥ 3x - 21
d) y ≥ 3x + 21

(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.)