1. D
2. A
3. C
I'll answer the last two in a minute.
Answer:

Step-by-step explanation:
s represents one side of the cube
Volume of cube= (s)^3
= (3x)^3
= 27x^3
Answer:
24
Step-by-step explanation:
The number line should read 18, 24, 30, 36, 42. There is a spacing of 6 units between each tick mark.
Good luck.
Hope this helps!
Answer:

Step-by-step explanation:

Answer:
z = 5
Step-by-step explanation:
m = ∆y/∆x = y₂-y₁/x₂-x₁
0 = y₂-y₁/x₂-x₁ = 5 - z / -7 - 9 = 5 - z / -16 →
5 - z / -16 = 0 → 5 - z / -16 × -16 = 0 × -16 → 5 - z = 0 →
5 - z - 5 = 0 - 5 → -z = -5 → z = 5