Answer:
The table C correctly shows the ratio 8:1 for each grade
Step-by-step explanation:
Let
x ----> the number of students
y ----> the number of adults
we know that

<u><em>Verify each table</em></u>
Table A
grade 6

Multiply in cross
----> is not true
Table B
grade 6

Multiply in cross
----> is not true
Table C
<u><em>grade 6</em></u>
\frac{96}{12}=\frac{8}{1}
Multiply in cross

----> is true
<u><em>grade 7</em></u>

Multiply in cross

----> is true
<u><em>grade 8</em></u>
\frac{136}{17}=\frac{8}{1}
Multiply in cross

----> is true
therefore
The table C correctly shows the ratio 8:1 for each grade
Table D
<u><em>grade 6</em></u>

Multiply in cross
----> is not true
Answer:
no because the x value -2 has two corasponding y values
Step-by-step explanation:
Answer:1/20
Step-by-step explanation:
1/2=10/20
1/5=4/20 1/4=5/20
4/20 + 5/20 = 9/20
10/20 - 9/20 = 1/20