How do I get the enthalpy change for the reaction?​

What is the solution to the system of equations? (–2, –8) (–1, –5) (0, –2) (2, 4)

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 is x and y intercepts for y=x+7