HELP Math In three years time a pet mouse will be as old as his owner was four years ago . Their present ages total 13 years . Find the age of each now .
please include step by step explanation and thank you ! ​

Malia is observing the velocity of a cyclist at different times. after two hours, the velocity of the cyclist is 15 km/h. after five hours, the velocity of the cyclist is 12 km/h. part a: write an equation in two variables in the standard form that can be used to describe the velocity of the cyclist at different times. show your work and define the variables used. (5 points) part b: how can you graph the equations obtained in part a for the first 12 hours? (5 points) if you can try and make this as little confusing as you can

Which is equivalent to 10/12? options: 10/18 5/6 3/12 9/11

What could explain what happened when the time was equal to 120 minutes