1 meter = 100 centimeters, so 120 centimeters equal to 1.2 meters.
Im guessing he answered 30 correct, let me know if im correct
Answer: Choice ARaising something to the 1/4th power is the same as applying the 4th root to that expression. Raising an expression to the 1/n power is the same as applying the nth root.
Rule:
(if the text is too small it basically says x to the (1/n) = square root with a small 'n' all over x)
The first two options imply that x can be somewhere *between* -2 and 4, which clearly isn’t the case. Looking at the two sections graphed, we see that x can be less than, but not equal to, -2 (indicated by the hollow dot at -2) and greater than *or* equal to 4 (indicated by the solid dot at 4). The third option is the only one that describes this situation.