Bob is having a party and wants to order cakes. there will be 57 guests and he wants everyone to get a slice of cake. he wants to pay as little as possible.

how much will he have to pay for the cakes?

1st cake is:

20cm cake.

serves.
12 people
cost
£13.50

2nd cake

25cm cake

serves.
20 people
cost
£18.75.

can somebody me work this out.

The owner of the plant nursery where you were tells you to fill 350 ml bottles from a 30 l from a fertilizer

(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.)

What number is 7 units left of -15?