# Chapter 1 - Foundations for Algebra - 1-3 Real Numbers and the Number Line - Mixed Review - Page 22: 79

$4(y+1)$

#### Work Step by Step

"The sum of y and 1" means that we are adding $1$ to $y$. We represent this with $(y+1)$. "4 multiplied by the sum of y and 1" means that we need to multiply $4$ by this quantity, giving us $4(y+1)$.

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