Question 1172270: the graph says:
nutrition below:
serving size-1 bar
calories-190
total fat-4.5 g
total carbs 16g
protein: 21 g
let p represent the amount of protein and n represent the number of energy bars:
write a proportional relationship involving p and n and solve it for p
Answer by math_tutor2020(3817)   (Show Source):
You can put this solution on YOUR website!
The chart says "protein: 21 g"
This applies to one energy bar. So we could say
1 bar = 21 grams of protein
n bars = 21n grams of protein
Simply multiply both sides by n
n is a placeholder for a positive whole number
For instance, if n = 3, then
n bars = 21n grams of protein
3 bars = 21*3 grams of protein
3 bars = 63 grams of protein
Therefore, the equation is
p = 21n
There's no need to solve for p because p is already isolated on its own side, and there's nothing else on the left side.
If you wanted to solve for n, you would divide both sides by 21 to get p/21 = n, which is the same as n = p/21.
Answer: p = 21n
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