Which is a multiple of 3, 2, and 5? 36 40 45 60

For a field trip to the zoo, 4 students rode in cars and the rest filled nine busess. how many students were in each bus if 472 students were on the trip

What is the effect on the graph of the function f(x)=x when f(x) is replaced with -f(x)+4

What is negative 3/9 times negative 2/8 ?