Answer:-19
Step-by-step explanation:
The answer is A I believe
Answer:

Step-by-step explanation:
Since question already gives the number of dollars she will tip, I'm assuming it's asking for percent tipped.
Because the total is $75 and Theresa is tipping $6, she is tipping
of the total. To convert this to a percentage, multiply by 100: 
Step-by-step explanation:
7*10^10=70,000,000
(70milion)
7*10^15=7000,000,000,000,000
What is it? I will help. :)