Which represents the solution set of 5(x+5)< 85

Find the vertex of the function given below y=x^2-6x+1

Ricky takes out a $31,800 student loan to pay his expenses while he is in college. after graduation, he will begin making payments of $190.66 per month for the next 30 years to pay off the loan. how much more will ricky end up paying for the loan than the original value of $31,800? ricky will end up paying $ more than he borrowed to pay off the loan.

What are the exclude value of mn+3m