For number 3 add all the numbers and divide how numbers you have
Answer:

Step-by-step explanation:
He needs to earn ; 77.99-20= 57.99 dollars
so in one week there are 2 weekends; so he earns 6×3×2 = 36 dollars
so no of week = 57.99÷ 36= 1.6 weeks
so weeks are in natural no thus it will take him 2 weeks !!
Answer:
44.59
Step-by-step explanation:
First add 20% to $34.65 and get $41.58, add the tax and your answer is $44.59.