1.)the system of equations is graphed on the coordinate plane.
y=x−1y
−2x− 4
enter the coordinates of the solution to the system of equations in the boxes.

Really need on these. i have no idea what to do

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

Question 10jur's car can travel 340 miles on 12 gallons. jack's car can travel 390 miles on16 gallons. which person has the best mileage (miles per gallon) and what istheir mileage?