for dinner, abelita chooses the italian salad that costs $3.99 before tax, and franco chooses the fettuccini…

for dinner, abelita chooses the italian salad that costs $3.99 before tax, and franco chooses the fettuccini alfredo that costs $7.17 before tax. if the sales tax is 5 percent, explain how to find the total cost for their dinner.
Answer
Explanation:
Step1: Calculate the total cost before tax
$3.99 + 7.17=11.16$
Step2: Calculate the amount of sales - tax
The sales - tax rate is $5%=0.05$. So the tax amount is $11.16\times0.05 = 0.558$.
Step3: Calculate the total cost after tax
Add the cost before tax and the tax amount: $11.16+0.558 = 11.718\approx11.72$.
Answer:
$11.72$