Answer: The total of Alyssa's bill including tip is $15.9625 or $15.96
Step-by-step explanation: First, we need to add up all the items prices to get Alyssa's total bill pre tip.
$6.79 + $3.99 + $1.99 = $12.77.
Next, we multiple the tip percent by the Alyssa's total pre tip bill.
$12.77 x 0.25 = $3.1925
Finally, we add the amount of tip she paid to her total pre tip bill.
$12.77 + $3.1925 = $15.9625 or $15.96.