A recent survey determined that 7 out of 9 students eat school lunch at least once a week.if 450 students were surveyed how many how many eat school lunch at least once a week?

To find out how many students eat school lunch at least once a week, we can set up a proportion based on the survey results. Since 7 out of 9 students eat school lunch, we can calculate the number of students by multiplying the total surveyed (450) by the fraction (7/9). Thus, ( 450 \times \frac{7}{9} = 350 ). Therefore, 350 students eat school lunch at least once a week.