B. B+4
This should be right because if the brothers age is b and Jonna's age is 4 years older then it would be b+4
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Answer:
yes.
Step-by-step explanation:
write these ratios as fractions to see if they are proportional
3/4
9/12 -------> this can be simplified by dividing by 3
= 3/4
therefore yes they are equivalent
