The total volume is 12x
if the sand is 1.5 ft tall then use the equation 1.5 with the sand and see if you get the total volume
Answer:
B yes, because every x value corresponds to exactly one y value
Step-by-step explanation:
A function means that each input goes to a different output
Each input goes to only 1 y value
Answer:
a) eight and seven ninths minus three and four sixths
Step-by-step explanation:
The required result is 
a)

b)

c)

d)

The answer would be:
-2(x+1)
Answer:
B
Step-by-step explanation:
it's basically divided