Your marketing department estimates weekly sales of ice cream at your grocery stores using average temperature and advertising expenditures as explanatory variables. The estimated equation is:

S = 100 + 20T + 0.5A

where S is weekly sales in thousands of dollars, T is average weekly temperature in degrees Fahrenheit, and A is weekly advertising expenditures in thousands of dollars. Next week is expected to be hot, with temperatures averaging 100^OF. Marketing has already budgeted $200 thousand for next week's ads. What is your prediction for next week's ice cream sales?

Select one:

a.

$2,200 thousand

b.

$2,000 thousand

c.

$120.5 thousand

d.

$220 thousand