Simplify the expression.
8/9^0
(Type an integer or a fraction.)

Add the fractions and simplify 1/2+ 1/3

Solve the following inequalities and show the solution on a number line. 2x+3< 3(4x+5)

(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.)