Answer:
a) 75.4 kg
b) 
Step-by-step explanation:
a) The ideal weight of a 6-foot (72 inches) male is given by simply applying h= 72 in to the expression:

b) Expressing height as a function of weight:

Verifying with W(h(W)):

Verifying with h(W(h):

Answer:
The domain represents a 11 month period of flower production.
Step-by-step explanation:
The domain is represented by the vertical axis.
Margin error of a sample mean is given by

where σ is the standard deviation,

is the critical value and n is the sample mean.
So beside the given standard deviation, we're supposed to know the sample size and critical value to answer this question.