Answer:
y=3x+2
Step-by-step explanation:
-2's opposite is positive and the rate of change (slope) is constant
It would take him 12 days.
1/3 x 3 = 3
3x4=12
Let a be the amount needed of 70% pure antifreeze, and let b be the amount needed of 95% pure antifreeze.
0.7a + 0.95b = 180 * 0.9 .........(1)
a + b = 180 .............................(2)
b = 180 - a ..............................(3)
Plugging the expression for b in equation (3) into equation (1), we get:
0.7a + 0.95(180 - a) = 162 ......(4)
Solving equation (4) gives the value a = 36, and plugging this value for a into equation (2) we get b = 144.
Amounts needed are therefore 36 gallons of 70% pure antifreeze and 144 gallons of 95% pure antifreeze.
Answer:B hope this helps
Step-by-step explanation:3.65, 3 2/3, 3.7 from least to greatest
