70% of the students pack there lunches. 14/20 = 7/10 = 0.7
I'm pretty sure it is d, you are combining the terms which is the same thing.
Answer:
y = 3x - 7
Step-by-step explanation:
Slope - Intercept Form : 
= slope
= y - intercept
Slope = 
= 
= 
So far: 
Plug in a point from the graph, ex. (3,2)

Equation : 
-Chetan K
Answer:
after 1 hr = 20 after 2 hrs =<em> </em> 40 after 3 hrs = 80 160 n 3 hrs