What are the domain and range of the relation? is the relation a function? d={(0,0), (3 ,19), (4 ,16), (3 ,0)}

Apatient is given 50 mg dose of medicine the medicines effectiveness decreases every hour at a constant rate of 40% what is the exponential decay function that models this scenario how much medicine will be left in the patients system after 2 hours

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

Abouncy ball is released from a certain height. on the first bounce, it travels 32cm. with each subsequent bounce, it travels 9/10 the distance of the previous bounce. what is the total distance that the ball has traveled when it completes its 25th bounce?