Answer:
1) x+2y+15=0
only know that one soz
Step-by-step explanation:
79 is a prime, so we cannot reduce it.
100=1,478,300
1000=1,478,000
10,000=1,470,000
Idk for sure but im thinking 8/12? idk sorry
9 less than a number is <em><u>9 - n</u></em>
Where n is that number
