## Functions Modeling Change: A Preparation for Calculus, 5th Edition

$\frac{69}{7y}$
Rewrite the fractions to get a common denominator. $$\frac{6}{7y}+\frac{9(7)}{7y}=\frac{6}{7y}+\frac{63}{7y}$$ Therefore, the expression simplifies to $\frac{6+63}{7y}=\frac{69}{7y}$