First problem: his claim is sometimes true, and only if m is less than 5. If m is greater than 5, the answer is positive.
Second problem: his claim is always true. the negative p and the positive p always cancel each other out
17. A and F are correct
18. set up as a ratio problem: .5/12 = 16/x
then cross multiple and solve for x: .5x=12 x 16
x = 384 muffins. Now divide by 12 to get how many batches of 12 you can make: your answer is 32 batches of 12 muffins.
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