13. If \( y \) varies directly as \( x \) and \( y \) what is \( y \) in terms of \( c \) when (A) \( \frac{2 c}{3} \) (B) \( \frac{3}{2 c} \) (C) \( 20 c \) (D) \( \frac{96}{c} \)

If \( y \) varies directly as \( x \), it means that there is a constant \( k \) such that: \[ y = kx \] To express \( y \) in terms of \( c \), we need to know the relationship between \( x \) and \( c \). However, since the problem does not provide a specific relationship between \( x \) and \( c \), we can only express \( y \) in terms of \( c \) if we assume \( x \) is some function of \( c \). Let's analyze the options given: (A) \( \frac{2c}{3} \) (B) \( \frac{3}{2c} \) (C) \( 20c \) (D) \( \frac{96}{c} \) Without additional context or a specific relationship between \( x \) and \( c \), we cannot definitively determine which option represents \( y \) in terms of \( c \). If you have more information about how \( x \) relates to \( c \), please provide it, and I can help you find \( y \) in terms of \( c \). Otherwise, any of the options could potentially represent \( y \) depending on the value of \( k \) and the relationship between \( x \) and \( c \).