What is the length of the segment connecting the points (-9,3) and (-9, -2

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

In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.

What function has a range {yly< 5}? question on picture above^