What is the solution to this system of equations?

1/4x + 1 and 1/2y = 5/8. 3/4x - 1 and 1/2y = 3 and 3/8

A) (4, -1/4)
B) (4, -9/16)
C) no solution
D) infinitely many solutions

(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.)