Answered

Estimate a 15% tip on a dinner bill of $89.14 by first rounding the bill amount to the nearest ten dollars. 1

Answer :

Let:

C = Cost of the dinner

T = Tip

r = Percentage of the tip

[tex]\begin{gathered} C=89 \\ r=0.15 \\ T=C\cdot r \\ T=89\cdot0.15 \\ T=13.35 \end{gathered}[/tex]

Answer:

$13.35

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