Answer:
higher than; remain unchanged; remain unchanged
Step-by-step explanation:
The equilibrium wage of $15/hour for teachers is higher than the new $10/hour minimum wage. After this development we would expect the the number of teachers employed to remain unchanged, unless the marginal revenue product of hiring teachers is greater than the wage rate of $15 (ie the individual teacher revenue output is greater than their individual wage)
The equilibrium wage remains unchanged, unless there becomes an increase in the supply of teachers.