Estimate a
15
%

tip on a dinner bill of
$
49.75

by first rounding the bill amount to the nearest ten dollars.

I think 3$ ‍♀️I suck at math even if it’s easy

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.