The answer is $482. $450 + $175 - $140 - $3 = $482. Hope I could help, have an amazing day to whoever is reading this! :D
Answer:
8.3
Step-by-step explanation:
c squared
√180 or 5√6
Plug in: a^+b^2=c^2
a^2+12^2=18^2
a^2+144=324
subtract 144 from both sides
a=√180
a= 5√6