Answer:
a) R(randy)
expression: Randy's brother= 2R
b) 16 years old
c) Randy's sister=R+3
Explanation:
because maths
A) R2 = 16
B) Randy's brother is 16 years old.
C) R - 3 = 5
Randy is 8 years old, his brother is 16 years old, and his little sister is 5 years old.
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