To restore the accuracy of a bimetallic thermometer you need to

The answer to this question would be: calibration

Calibration is a process to standardize the measuring tools. Calibration should be done regularly so the tools will always give a good accuracy. It can be done by measuring a known value of an object. In this case, an iced water is a good option since it should be known around 0 Celsius or 32 Fahrenheit.

This is a pretty on point question because all we need to do is replace 's' in the equation with '35'.the calculation will be9.95 + 0.30s = c9.95 + 0.30 (35) = c9.95 + 10.5  = cc = 20.45