You survey 50 people and 28 say "yes." what fraction of the people say "yes? " what percent of the people say "yes? "

The fraction is 28/50, which is computed as the ratio between the number of people that said yes and the total number of people surveyed.

The percent is given by re-writing this ratio so that the denominator is 100. If you multiply both numerator and denominator by 2 (thus generating an equivalent fraction) you have 56/100, which means 56%.

add all the numbers and check the ones place.

the answer is 486. as the ones place is more than 4, the estimation will be the next 10 ie, 490

its a straight line parallel to the time axis