Answer:
K = (2v)/2
Step-by-step explanation:
1. Multiply both sides by 2/n
<u>Now: (2v)/n = b + K</u>
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2. Subtract k from both sides
<u>Now: (2v)/n - b = K</u>
The unit rate is 100 calories per cup
and 300 calories in the three cups of cereal
1. x = 30
REC = 130
2x + 70 = 4x + 10
60 = 2x
x = 30
you try the others
Good luck :D