If two objects have the same shape, they are called "similar." When two figures are similar, the ratios of the lengths of their corresponding sides are equal so the word would be ratio
Matt would get about $4 and 90 cents back from the clerk, since 10 dollars minus $5 and 10 cents equals $4 and 90 cents.
It can save time from doing number crunching and analysis because it's an easy to see visual.
4z+17y-5
unit rate- 1.75 dollars
