Answer: 12cm.
Step-by-step explanation:
Based on the scatter plot, we can see that as the average temperature increases, the amount of grass growth also increases. The data points form a general upward trend, although there is some variability in the data.
To predict the amount of grass growth that would occur at a temperature of 55° F, we can draw a line of best fit through the data points. One possible line of best fit is shown in the scatter plot below:
scatter plot with line of best fit
Using this line of best fit, we can estimate that the amount of grass growth at a temperature of 55° F would be approximately 13 centimeters. Therefore, the best prediction for the growth that would occur if the temperature were 55° F is 12 centimeters.