Acar rental company charges a daily rate of $35 plus $0.30per mile for a certain car. suppose that you rent that car for a day and your bill (before taxes) is $167. how many miles did you drive?

You need to start by writing an equation to solve this problem.
If the car is only rented for one day, then that can be your b value in the equation y=mx+b. The b will be substituted for $35. The m value, or the growth rate, is the $0.30. The x value is the x, the miles, which we are trying to figure out. The y value will be $167.
The final equation is 167=0.30x+35. Now we solve for x
167=0.30x+35   Remove alike terms
-35            -35
132=0.30x         Divide by the number in front of the variable (x) to get it alone
 
.30    .30
x=440