Answer:
About 630 seventh-grade students would like to snorkel.
Step-by-step explanation:
Since you got 7 out of 9, we need to divide 810 by 9.
810 / 9 = 90
Now, we have to multiply 90 by 7.
90 x 7 = 630.
About 630 seventh-grade students would like to snorkel.