15-x=2(x+3) I need this solved and show me how you solved it
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Answer:
Step-by-step explanation:
We are letting <em>d</em> represent the number of drinks and<em> p</em> represent the number of pizza slices.
We know that each drink <em>d</em> costs <em>$2</em>. We also know that each pizza slice <em>p</em> costs <em>$4</em>. They spent a total of $28. Therefore:
We also know that 9 items was purchased all together. So, the total number of drinks <em>d </em>and pizza slices <em>p</em> sum to 9:
Therefore, our system of equations is:
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