Answer:
so first you do the work than check
Step-by-step explanation:
To round off to 10, the difference should range from 5 to 14. If the difference between two numbers is from 5 to 14, they all are rounded to 10.
Example:
(near to 10)



Answer:
12
3 x 4
if its one unit then you just multiply the sides in this case 3 x 4
93 students play an instrument because you would take 310 (the total amount of students) and multiply it by 0.3 (the thirty percent) and get 93
Answer:
Option B: 1.15($45) is the correct answer.
Step-by-step explanation:
Given that:
Total amount of restaurant bill = $45
Tip = 15%
As the bill would be 100% and a 15% tip will be added.
Thus total bill,
Total bill = (100+15)% = 115% of restaurant bill
Total bill = 
Total bill = 1.15($45)
Hence,
Option B: 1.15($45) is the correct answer.