3x – 2y = 15 x = 3

The two lines given by the equations above intersect in

the xy-plane. What is the value of the y-coordinate of

the point of intersection?

A. –7

B. –3

C. 3

D. 7

(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.)