NATHAN Oil Changes Per Year vs. Engine Repair Costs 400 320 240 Engine Repair Costs (dollars) 160 80 0 2 4 6 8 10 12 Number of Oil Changes Per Year The y-intercept of the estimated line of best fit is at (0, b). Enter the approximate value of bin the first response box. Enter the approximate slope of the estimated line of best fit in the second response box.​

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step-by-step explanation:

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square