exam Maths Puzzle Numerical Ability

How do I simplify -w+3(3+4w)

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exam Other Question

f(x)=
x+2 if -3<=x<0
x^2+1 if 0<=x<=2

evaluate each of the following
f(-1)=
f(0)=
f(2)=

what is the domain of f(x)

graph y=f(x) Hi! I need some help with this radical
^4(sqrt)z^4
**the^4 is an index number**

a.4
b.z
c.z^2
d.z^4

Thanks so much for your help in advance!!