Answer:
$6
total cost: $45.51
Explanation:
to find 15% of the dinner bill. we multiply 39.51 by the decimal form of 15%, which is 0.15
39.51 x 0.15 ≈ 5.926
you can estimate this by rounding up to a $6 tip, or to include cents, you can round to $5.93
to find the total cost with the estimated amount we can add:
39.51 + 6= $45.51 is the total cost