Rounding to the nearest tenth, which of the following give an underestimate? (Highlight your answers) Ⓐ 39.45 x 1.7
Ⓑ 27.54 x 0.74
Ⓒ 9.91 x 8.74
Ⓓ 78.95 x 1.26
Ⓔ 18.19 x 2.28

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.