Just use your right angled triangle formula.
A=
Plug n chug
A=
A=71.5
Option B is the correct answer because you start with 15 gallons (y-intercept), and the car consumes or decreases at 0.03 gal/per mile (your slope or m).
Answer:
the length is 3
Step-by-step explanation:
length times 6 equals 2
6 divided by 2 equals 3
35/100= x/80 x=28 8/100=x/5 x=0.4 50/100=x/125 x=62.5 12/100=48/x x=400
Here is the equation: x+(x+20) = 120
Since you can't combine anything yet, its x+x+20=120
You need to get x by itself
Minus 20 from both sides
Its x+x=100 now
Combine the x's which is now 2x
Now divide 100 by 2 which is 50
x=50
---------------
Lets check:
50+(50+20)=120
Now combine the numbers in the parentheses
Its now 50+70=120
50+70=120 and 70-50=20
As you can see, he ran 50 minutes the first day and 70 minutes the second day