Final answer:
The constant term in the expression is 8 and the coefficient of x is 32.
Step-by-step explanation:
The given expression is 8-4(x+4)+9(4x+1). To find the constant term, we need to simplify the expression by combining like terms. The constant term is the term that doesn't involve any variable. In this case, it is 8. To find the coefficient of x, we look for the term that is multiplied by x. In this case, it is -4 in the first part of the expression and 36 in the second part. Therefore, the coefficient of x is -4 + 36, which simplifies to 32.