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Comparing Linear and Exponential Functions Notes
6. Julie fills up her truck with gas. Her gas tank can hold 40 gallons of gas. Each mile she
is on the road, she uses 0.15 gallons of gas.
a. Is f(x) a linear function or an exponential function? Explain how you know.
b. Find a function formula equation f(x)=_
c. Find the value of f(0) and explain its meaning in terms of the gas tank.
d. Find the value of f(100) and explain its meaning in terms of the gas tank.
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e. Find the value of x that makes f(x)=10, and explain its meaning in terms of the gas tank