The following table shows the hot dogs bought from a street vendor over the course of eight days ("Demand"). Also shown is the temperature for each day in degrees Celsius. Complete parts a and b below.

Temperature(C)	21	10	24	18	9	13	17	23
Demand	45	31	34	38	19	25	43	33

a. Calculate the slope and y-intercept for the linear regression equation for these data.

y= ? + ? x

(Round to two decimal places as needed.)

b. Predict the demand for hot dogs on a day with a temperature of 11C.

The predicted demand for hot dogs on a day with a temperature of 11C is enter your response here.

(Round to the nearest integer as needed.)