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%.

because linear equations are a lot simpler than quadratics equations, and linear equations formula is a lot easier to memorize. that's why i think they're harder.