Imagine that the number line between 9.3 and 9.4 were divided into 5 = parts. Then the red dot would be 1 part to the right of 9.3, which translates into the value
9.32. Find the square of this to determine the value of x: √9.32 = 86.86.
Of the four given possible answers, 87 is the best representation of x.
