Answer:
$35.67 per machine hour 
Step-by-step explanation:
The computation of the predetermined overhead rate is shown below:
Predetermined overhead rate = Fixed predetermined overhead rate + variable predetermined overhead rate 
where, 
Fixed predetermine overhead rate = Estimated total fixed manufacturing overhead ÷ Estimated machine hour 
= $1,108,919 ÷ 37,100 machine hours
= $29.89 per machine hour 
And, the Estimated variable manufacturing overhead is $5.78 per machine-hour
So, the Total predetermine overhead rate is 
= $29.89 + $5.78
= $35.67 per machine hour