In exercise 1, the following estimated regression equation based on

In exercise 1, the following estimated regression equation based on 10 observations was presented.
y = 29.1270 + .5906x1 + .4980x2
a. Develop a point estimate of the mean value of y when x1 = 180 and x2 = 310.
b. Develop a point estimate for an individual value of y when x1 = 180 and x2 = 310.