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HOW TO REMEMBER FORMULA AND CALCULATOR?
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INVenting Brain Assistant Tools
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Demonstration on how to use your smartphone as your formula and calculator tool
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VOICE DATA ENTRY
valid only for smartphone with microphone icon.
Touch clear button. Next touch any white button. Next touch microphone icon 
. Next speak numbers only.
For decimal use the word "point" example say, "thirteen point seventy five" . Then touch the Solve button.
Maximize Menu A, B, and C Interactive Calculator
The health club serves a special menu consisting of three kinds of food called menu A, menu B, and menu C. Shown below on the table are the ingredients to make menu A, menu B, and menu C. If the health club have 140 gram of carbohydrates, 11 grams of fat, and 24 grams of protein. Determine ahead of time how many menu A, menu B, and menu C the health club can advertise without wasting any ingredient.
X +
Y +
Z
=
Equation 1
X +
Y +
Z
=
Equation 2
X +
Y +
Z
=
Equation 3
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Menu A, or X =
Menu B, or Y =
Menu C, or Z =
if you know ahead of time that you will need to prepare 6 menu A. All you need to do is multiply 140 x 3 for carbohydrates, 11 x 3 for fats, and 24 x 3 for protein. Those are the ingredients you need to order ahead of time to make six (6) menu A. Try it. How many menu B and menu C you will make without any waste of ingredients?
How about you want to prepare 20 menu C, how many grams of carbohydrates, fats, and protein do you need to order ahead of time? How many menu A and menu B you will make?