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A. 29 b. 6.7 c. 25 d. 5.4
from A to B and back to A then to B and back to A again
b + 4 = 7.7 b = 7.7 - 4 b = 3.7
If the number you are trying to round ends in a 5 or higher, then you round up. If it's less than 5, you round down. For example: 15 rounds up to 20 4 rounds down to zero. 214.89 rounds down to 210. 90 doesn't round to anything because it is already at a ten. Mathematically, and programmatically, speaking it can be solved using these variables and conditions n = number b = base (10, 100...) m = n Mod b r = n-m if m/b is more than or equal to 0.5 then r+b r = rounded number if the number is negative, the function rounding is re
3b+4 = b+12 3b-b = 12-4 2b = 8 b = 4