X^2-81=0 solve the question
2 answers:
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Answer:
Fruit smoothie: $3.4
Protein bar: $2.5
Step-by-step explanation:
Let x represent cost of fruit smoothie and y represent cost of protein bar.
We have been given that Jake buys a fruit smoothie and a protein bar for $5.90. We can represent this information in an equation as:
We are also told that Kobe buys 2 fruit smoothies and 4 protein bars. He pays $16.80. We can represent this information in an equation as:
Upon substituting equation (1) in equation (2), we will get:
Therefore, each protein bar costs $2.5.
Upon substituting in equation (1), we will get:
Therefore, each fruit smoothie costs $3.4.