a school purchsed basketball for $20 each and footballs for $15 each. they a brought a total of 28 for $480 how many of each typ
1 answer:
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So we have the equation:
Then we need to multiply by 4 on both sides to get rid of the denominator on the left:
Then we subtract 9 on both sides to solve for z:
Therefore the answer is z = -0.6.