\%. \( 9 / 10 \) The last time Terri played softball, she hit the ball \( 45 \% \) of the times she was at bat. Based on this information, how many times will Terri hit the ball the next time she plays softball if she is at bat 20 times?

To find out how many times Terri will hit the ball when she is at bat 20 times, we can use the percentage of times she hits the ball, which is \( 45\% \). First, we convert the percentage to a decimal: \[ 45\% = \frac{45}{100} = 0.45 \] Next, we multiply the decimal by the number of times she is at bat: \[ \text{Hits} = 0.45 \times 20 \] Calculating this gives: \[ \text{Hits} = 9 \] Therefore, if Terri is at bat 20 times, she is expected to hit the ball \( \boxed{9} \) times.