College 2

College student is moving into a dormitory. The student rent a truck for $19.95 plus $0.99 per mile. Before returning the truck the student fills the tank with gasoline, which cost $65.32. Total cost $144.67. Using a linear equation, explain the process to find how many miles the student drove the truck

Result

x =  60 miles

Solution:

f(x)=19.95+0.99x  144.67−65.32=19.95+0.99⋅ x  0.99x=59.4  x=60 =60  miles f(x) = 19.95 + 0.99x \ \\ \ \\ 144.67-65.32 = 19.95 + 0.99 \cdot \ x \ \\ \ \\ 0.99x = 59.4 \ \\ \ \\ x = 60 \ \\ = 60 \ \text{ miles }

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