Andrew is paid 4$ per hour for the first 30 hours he works each week. he makes 5$ per hour for each hour he works over 30 hours per week. in other words, total wages=fixed wages for 30 hours + additional wages at 5$ per hour. write a function that gives andrews total wages when he works more than 30 hours

Because the first wage is determined, here's the start of our sentence:
4(30)
Now, we know that any number above thirty turns into $5 an hour, so:
4(30) + 5(h - 30)
h represents hours, but because he only gets 5 an hour for his work above 30 hours, we must subtract five from the sentence.
So the function:
f(h) = 4(30) + 5(h - 30)
Or, simpler:
f(h) = 5h - 30

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