Select the correct answer. 15
If no denominator equals zero, which expression is equivalent to I
6
+
7
I + 6?
OA.
OB.
221 + 132
12 - 36
221 - 48
12 – 36
22
2 – 36
221 + 48
12 - 36
OC.
OD.
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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.

The correct answer is b