I’m not exactly sure but maybe f(0) = 4 and g(–2) = 4
It cannot be 30, because the sum of two sides should be more than third side
-not D
10+18=28 <30
it cannot be 6 +10 < 18
it cannot 8
8+10=18
so it is has to be C) 12
12+18>10
10+12>18
10+18>12
answer C. 12 cm
8.517 can be written as an improper fraction by putting it over one! (8517/1000) or as a mixed number (8 and 517/1000
Hoped this helped! :)