A5 digit number has the digits 0, 5, 7, 9 and 0. to the nearest thousand, it rounds to 80,000. what is the number . explain

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie

Find the number of real number solutions for the equation. x2 + 5x + 7 = 0 0 cannot be determined 1 2

Can someone me immediately, this is due by midnight! if you can't see the question, i'll text it to you. show the steps you took to get your answer.