HELLO EVERYONE WHAT IS THIS ANSWER??? ANYONE KNOW? i need help on this question. it is kinda confusing but if anyone knows pls txt back to this post. thank you so much and have a good day.

The suare root of 9x plus 7 plus the square rot of 2x equall to 7

Which inequality is equivalent to -3x < -12? x < 4 , x < -4 , x > 4, x > -4

72 the length of a side of a triangle is 36. a line parallel to that side divides the triangle into two parts of equal area. find the length of the segment determined by the points of intersection between the line and the other two sides of the triangle.