Find the constant of variation for the relation and use it to write an equation for the statement. Then solve the equation. C.
If y varies directly as x, and y = 5 when x = 8, find y when x = 4.

25 ! the line of best fit is h = 5a + 86. predict the height at age 16. show your work.

Rectangle bcde is similar to rectangle vwxy. what is the length of side vy? a) 1 7 b) 2 7 c) 3 7 d) 4 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.)