Question

this is the graph of w(t), solve w(t) = 10, no solution, t = 7 only, t = 2 and t = 7, t = 2 only

Explanation:

To solve \( W(t) = 10 \), we look for the values of \( t \) where the graph of \( W(t) \) intersects the horizontal line \( y = 10 \). From the context (assuming the graph has points where \( t = 2 \) and \( t = 7 \) correspond to \( W(t)=10 \)), we check the options. The option " \( t = 2 \) and \( t = 7 \)" is the most appropriate as it suggests two points where the function value is 10.

Answer:

\( t = 2 \) and \( t = 7 \)