The line plot shows the number of hours students studied for a final exam. How many students studied at least four hours for the final exam? Enter your answer in the box.

Yuri, sam and dani had the same math homework last night, but none of them finished it. yuri finished 3/8 of her homework, sam finished 4/6 of her homework and dani finished 1/2. who finished the most math homework? who finished the least amount?

Linda loans her friend $250 with a 5% monthly intrest rate. how much was the whole loan?

The difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.