Ratio-a rational number Equivalent ratios- rational numbers that have the same value but which are represented in a different form Equivalent rates-a type of ratio that compares two quantities that have different units of measurement
explanation: If you times $1.28 By 12.99 your answer is $16.63 and if you round it up to 2 decimal places it's $17 as $16 and 63 cent is closer to $17 than $16