24 students brought there permission slips to attend the class field trip to the local museum. if this is represented 8/10 of the class, how many students are in the class? identify the equation you would use solve this problem options:

a) s+ 8/10=24
b) 8/10s=24
c) s/24=8/10
d) 8/10x 24=s

You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?