the histogram shows the lengths of 12 guinea pigs. how many guinea pigs are at least 20 cm long? guinea pigs…

the histogram shows the lengths of 12 guinea pigs. how many guinea pigs are at least 20 cm long? guinea pigs are at least 20 cm long.
Answer
Explanation:
Step1: Identify relevant bars
Bars for lengths 20 - 25, 25 - 30, 30 - 35, 35 - 40 are relevant.
Step2: Read heights of bars
Height of 20 - 25 bar is 4, 25 - 30 is 2, 30 - 35 is 2, 35 - 40 is 1.
Step3: Sum the heights
$4 + 2+2 + 1$
Answer:
9