Answer:
( 1, -3 )
Step-by-step explanation:

Answer:
3
Step-by-step explanation:
Answer:
7.
Step-by-step explanation:
-10 /(3 + 2) + 9
= -10 /5 + 9
= -2 + 9
= 7.
Answer:
7.01, 10, 7.1, 12, 7.001, 8, 15
Step-by-step explanation:
Those numbers are all greater than 7
Either one at any given time could be equal to zero. So
x + 2 = 0
x = - 2
x - 18 = 0
x = 18
I've enclosed a graph of this so you can see that the answers I've given are the ones expected.