In the top the "f(x)" equals 9, now they are asking you to add onto the 9 by 1 causing it to be 10. If you did the first few you would have noticed that it takes 9 in order to get to 5 from -4.
here are the answers btw:
Dave has 15$ to spend on a book for 8$ and two birthday cards (c) for his friends. How much can he spend on each card if he buys
2 answers:
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