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# \$2.00Are you sure it's fat free? Mathematics in our world

Found in Mathematics: General-Mathematics
Chapter 1, # 0
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Following completion of your weekly readings, read “Are You Sure It’s Fat Free?” on page 286 of Mathematics in Our World.

Gather three of your favorite packaged foods; perhaps one from each: breakfast, lunch and dinner. Use the model explained in the “Are You Sure It’s Fat Free?” to analyze, through the mathematical formula explained, the fat content and protein content from your foods. To analyze the protein content use 4 calories per gram of protein, rather than the 9 calories for grams of fat.

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Are you sure it's fat free? Mathematics in our world
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• Posted on Sep 19, 2012 at 9:24:23PM
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Preview: ... at per serving we need first find the calories and to do that we need to multiply the number of grams of fat (1) by 9 because each gram of fat equates to 9 calories (1x9=9). Now we need to divide the fat calories we just calculated (9) by the total number of calories per serving (200) and multiply by 100.  (9/200x100= 4.5%) So, 4.5% of the calories per serving come from fat.             To find the protein content of this orzo we will multiply the number of grams of protein per serving (7) by 4, because each gram of protein equates to 4 calories (7x4=28). So, in this case there are 28 calories from protein. Next we will divide the protein calories (28) by the ...

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