Answer:
The fourth answer
Step-by-step explanation:
1 D (x=0 then y=-2; y=0 then x=-5)
2 D
<h2>x = 2</h2>
Step-by-step explanation:

Answer:
The answer is A- 10
Step-by-step explanation:
Answer:
4 students sing in the class.
Step-by-step explanation:
20×.2=4