To find out if either equation can be expressed in the form "s = some value," we first need to solve the system of equations.
We have the following two equations:
- \( 0.8f + 0.5s = 9 \)
- \( f + s = 16 \)
From the second equation, we can express \( f \) in terms of \( s \):
\[ f = 16 - s \]
Now, we can substitute this expression for \( f \) into the first equation:
\[ 0.8(16 - s) + 0.5s = 9 \]
Now, distribute \( 0.8 \):
\[ 12.8 - 0.8s + 0.5s = 9 \]
Combine like terms:
\[ 12.8 - 0.3s = 9 \]
Now, isolate \( s \):
\[ -0.3s = 9 - 12.8 \] \[ -0.3s = -3.8 \] \[ s = \frac{-3.8}{-0.3} = \frac{3.8}{0.3} \approx 12.67 \]
So we can express \( s \) as:
\[ s \approx 12.67 \]
Thus, it is possible to write the equation in the form \( s = \) some value, specifically:
\[ s \approx 12.67 \]
Therefore, the answer is Yes.