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Mathematics, 28.08.2019 05:30 tia0625
Anna and david left an 18% tip after having dinner at a restaurant. the amount of the tip was $9. anna's dinner cost $28. which equation can you use to find x, the cost of david's dinner.
a. 0.18(x+28)=9
b. 0.18x+28=9
c. 18(x+28)=9
d. 0.18x=28+9
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