Math

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f (x)= {\$50 if 0< x <60}
{_4_  
 3 X - 30 if x >60}
What is the cost if the repair man works for 45 minutes?
What is the cost if the repair man works for 105 minutes?
What is the computer repair manâ€™s rate policy? Explain in real terms

• Math -

I cannot make out you second equation

is it

(4/3) x - 30
or
4/(3x-30)
or .....

secondly, how is x defined.

• Math -

Idl

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