Answer:
A
Step-by-step explanation:
A. The constants a, b, and c must be real numbers with a not ever equal to zero.
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Age of a dog (age is a number)
So if Ann is a, then Tim has 11a brushes, and together they have a+11a=12a brushes.
if 12a=60, then a=60/12=5
o Ann has 5 brushes!