I think it’s the second one because The formula would be
x=
2a
−b±
b
2
−4ac
Answer: (3,-2)
Step-by-step explanation:


new system:

add.

plug in -2 for y

system:

Answer:
1,300
Step-by-step explanation:
Order of operations tells us that we should do everything in parentheses first.
Multiplying out (4 x 300) and (4 x 25) gets
1200 + 100
From here, we add the two together to arrive at
1,300
Answer:
(20 + 60) + (3 + 7) + (0.4 + 0.3) + (0.05 + 0.01)