C,f and b I think because u only look at the x and nothing else but when u looking in a linear graph u do a the straight line test
According to the equation located here: https://www.1728.org/glwarmng.htm burning one gallon of gasoline produces 19.3 pounds of carbon dioxide.
So, if a car gets 37 miles per gallon and if it travels 400 miles, it will use 10.81 gallons of gasoline and will produce 19.3 * 10.81 = 208.63 pounds of carbon dioxide.
20x+5y=120
10x+7.5y=80 multiply this one by 2
___________
20x+5y=120
20x+15y=160 subtract
___________
-10y=-40 divide both sides by -10
____________
y=4
20x+5(4)=120 plug 4 in for y in the first equation
20x+20=120 multiply
20x=100 subtract
x=5 divide to find x
Answer:
Step-by-step explanation:
1.) (36-4) times 12-4= 380
2.) (7+4) times 6 divided by 3= 22
3.) 25 -3 times 7 divided by 3= 18
Not rocket science.
