About how many ,means what in math? Plz answer fast

Solve the inequality and graph 6j - 7 < 5

Determine which expressions represent real numbers and which expressions represent complex number. asaaap! plis!

When solving this problem: 3025/5.5 = a/90.75 you get 49912.5 which would be the length of one of the sides of a square when the area is only 90.75 inches. is that answer correct, why, and how is it possible?