Janice saved three times as much money as annie if any saved $45 how much did janet save?

if janice saved three times as much as and plus $100 and together they saved $1000 how much did they save?

What is the value of x in the diagram below?

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

When you have 25 numbers, and jake picks 3 random numbers and puts them back, what is the chance bob has of picking those 3 numbers when he picks 6 random numbers (without putting them back)? explain.