Help! i've gotten really stuck on this problem, i don't know what to do 2x+1.5y =-60
2x+y=-50

i have to graph it and thats where im stuck!

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

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?

Will give brainliest for correct answer 8. use the distance time graph to answer these questions: a. what does the graph tell us about the velocity of the car? b. what is the average velocity of the car? (show work) c. is the velocity reflected in the graph positive or negative?d. is there any point on the graph where the car is not moving? how do we know?