Answer:
44 Rachel earn in 10 hour
Answer:


Step-by-step explanation:
The functions, missing from the question are:


Required
Determine the domain
To get the domain, means we want to get the possible values of x.
(a)

Equate 3 - x to 0

Solve for x


From the calculated value of x above;
When x exceeds 3; f(x) = undefined
So: the domain is:

(b)

Equate 3x to 0

Solve for x

From the calculated value of x above;
When x falls below 0; f(x) = undefined
So: the domain is:

Answer:
w => -4
w =<9
Step-by-step explanation:
4 x -5 = -20 then 12 + -20 = -8
Basically get the total before discount and multiply it by the percentage so 12•0.15=1.8
which means you save 1.8, so then you subtract 12-1.8 and you receive 10.2