Every week 3 members of a cooking club total their food cost and determine the mean amount that each person should contribute. this week, the mean contribution per member is $30. a fourth person who wants to join the cooking club buys $20 worth of food. what is the mean contribution for this week if the fourth person joins the cooking club.

Complete the equation of the line through (−10,3) and (−8,−8). use exact numbers.

(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.)

How do i i solve this equation? -18 = x/3 + 3