maths
posted by nick .
1)a linear function is represented by f(x)=2x+7 which of the following functions would be parallel to that of the function above
a)f(x)=2x7
b)f(x)=x+7
c)f(x)=x7
d)f(x)=1/2x+7
e)f(x)=1/2x7
I choose b
2)water is pumped into an empty tank at a constant rate. after 2 minutes the tank contains 400 gallons. after 5 minutes the tank is full. how many gallons of water does the tank hold
900 gallons
can someone please check my answers

maths 
Steve
the one with the same slope of 2.
I choose (a)
Looks like it gets water at the rate of 200 gallons/minute. How do you get 900 after 5 minutes of pumping?
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