Question 109096
a) the amount of gas in the tank is dependent on the time


b) in the space of 30 min, you go from 59 liters to 38 lliters ... this -.7 liters/min is the slope
... when the tank was full (30 min before you had 59 liters) there would have been 59-30(-.7) or 80 liters
... g=-.7t+80


c) 0=-.7t+80 ... -80=-.7t ... 80/.7=t


d) g-intercept is 80 (see b) ... this represents the capacity of the tank


e) the slope is the rate of fuel consumption ... it is negative because the fuel is burned (consumed) over time


f) graph g on the vertical axis and t on the horizontal axis