y=9.105+21.138x1+0.536x2+1.394x3y=9.105+21.1381+0.5362+1.3943

where	x1=1= number of developers
	x2=2= number of hours spent creating the app
	x3=3= cost of software and testing ($'000)
	y== total cost of creating app ($'000)

a. What is the value of b22 in the equation?

b2=2=

b. Does it make sense to interpret b00 in this equation?

Yes

No

c. Predict the cost of creating an app involving 4 developers, 600 hours and $23,000 in software and testing costs.

$