Question 1156541

(1).
if the top of a hill rises {{{399}}} feet above checkpoint 4, and checkpoint 4 is {{{-204}}}

 the altitude of the hill is {{{-204+399=195}}}

(2) how much lower is checkpoint 1 than 3 ? 

if checkpoint 1 is {{{-58 }}}and checkpoint 3 is {{{2094}}}, then

{{{abs(-58)+abs(2094)=58+2094 =2152}}}