A baseball coach bought 4 bats and 7 baseballs for $68. The next day the coach bought 1 bat and 1 ball for $14. How much does each item cost? 4x+7y=68
x+y=14
Define the variables for the given equations.
x = bats y = baseballs
Solve the system using elimination.

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

What is the average diastolic blood pressure for adults