Answer:
Yes, the student is correct
Step-by-step explanation:
Given

Required
Does it represent the x intercept
At the x intercept, the value of x is 0.
So, the function
becomes 
can be compared to 
Hence, the student is correct
Answer:
-0.125
Step-by-step explanation:
Round 31.9 up to 32 so you can divide it by 4 to get about 8.