Answer:
For the ones that say use calculator try it. Just pop it in and you get your answer :D
Explanation:
rounding
a. 6.54 = 6.5
if the number is 5 or above round up and drop the numbers to the right of it
if its 4 or under drop the numbers to the right of it
in this case your tenth place is 5 so you drop the four.
follow this formula for the rest
True, if it's absolutely frozen <span />
1. B 80 feet
since the contour lines go by 25 B is between 75 and 100 and the only option left is 80
2. C 135 feet
point X is above 125 feet in elevation already and the only option is 135
