When you multiply 10, move the decimal point to the right one place value
3.14 x 10 = 31.4
31.4 is your answer
hope this helps
Answer+Step-by-step explanation:

Answer:
Part A: 38
Part B: 5 or 4 got two different answers
Part C: range because it tells how many numbers are involved apart from the smallest and largest
Step-by-step explanation:
Part A: highest number - lowest number
78-40
Part B