Iknow that is easy but to hard for me i am 9 th

Two cyclists 84 miles apart start riding toward each other at the same. one cycles 2 times as fast as the other. if they meet 4 hours later, what is the speed (in mi/h) of the faster cyclist?

When x = 3 and y = 5, by how much does the value of 3x2 – 2y exceed the value of 2x2 – 3y ?

How long does it take natsumi to clean up after she is done? table: .area time30. 245. 2.7560. 3.5