This response indicates application of a reasonable strategy that leads to some correct solutions. The student gives a correct equation for the line of best fit (y=–4.458x+32.668). The date in April, if the average March temperature were 3.5°C, is correct (17 day of April) and the explanation is well developed. The student replaces x in the equation with 3.5 and solves for y. The student states that it is inappropriate to use the equation if the average March temperature were 14°C and while the justification supports the solution, it is not mathematical (The trees would bloom in March or February instead of April. So the equation would be useless). This response demonstrates a clear understanding and analysis of the problem.
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