What number can round to760 when it rounds to nearest ten and 800 when it rounds to nearest hundred?
see u first need to check which is the most close the given value now you need to choose middle value and hence the margin will be the difference divided by two with a plus and minus sign.
over here its 26.5-22.4=4.1
now dividing by 2 we get 2.05
hence the margin error is ± 2.05
now add this to 1st number or subtract from the second no. and hence thats the no. from which the no. is deviated 22.4 ± 2.05
i think the answer is 28ft 12in. sorry if im wrong, but let me know if i am
d. no, it is not periodic. the function does not repeat on regular intervals