The height of the water in a tank decreased 3 inches each week due to evaporation. what is the change in the height of the water over a five week period due to evaporation

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

Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys

How do i take any fraction and make it into a decimal or percentage?