What is the value of y in the equation 4(5y − 8 − 2) = 185 − 15? 8.5
9.7
10.5
42.5

Can someone check if i did this correct. it’s number 4 if you’re wondering.

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.

(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.)