All solutions here are SUGGESTED. Mr. Teng will hold no liability for any errors. Comments are entirely personal opinions.
From graphing calculator,
r-value is close to 1 which suggest a strong positive correlation between the variables x and y.
From graphing calculator, required regression line:
Since r is close to 1, and we used the regression line of y on x to estimate y given an x within the range of data, the estimate will be reliable.
Very standard. Some students made mistake while keying values into the GC unfortunately.