Answer:
<em>12 </em><em> + 28 </em>
<em> - 60 r³ + 28 r² </em>
Step-by-step explanation:
a(b ± c) = ab ± ac (distributive property)
2r²(6r³ + 14r² - 30r + 14) = <em>12 </em><em> + 28 </em>
<em> - 60 r³ + 28 r²</em>
An item costs $430 before tax, and the sales tax is $12.90. Find the sales tax rate. Write your answer a a percentage
1 answer:
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