What is 5.6e12 in standard form

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)

Ineed to know the ordered pairs for this equation i need the answer quick because it’s a timed test

Harry owes the bank money. to repay his debt, he paid $150 back to the bank each month. after 10 months, his remaining debt was $6900. what was the original amount of harry's debt? how long did it take harry to pay back his entire debt?