From 2003 Through 2008,the Sales $R _ { 1 }$ (In Thousands of Dollars)for One of Two Restaurants Owned by (In

Multiple Choice

From 2003 through 2008,the sales $R _ { 1 }$ (in thousands of dollars) for one of two restaurants owned by the same parent company can be modeled by​ $R _ { 1 } = 480 - 6 t - 0.6 t ^ { 2 } , t = 3,4,5,6,7,8$ ​ where t = 3 represents 2003.During the same six-year period,the sales $R _ { 2 }$ (in thousands of dollars) for the second restaurant can be modeled by​ $R _ { 2 } = 259 + 0.77 t , t = 3,4,5,6,7,8$ ​
Write a function $R _ { 3 }$ that represents the total sales of the two restaurants owned by the same parent company.
​

A) ​ $R _ { 3 } = 739 - 5.23 t ^ { 2 } - 0.6 t$
B) ​ $$R _ { 3 } = 739 - 5.23 t + 0.6 t ^ { 2 }$$
C) ​ $$R _ { 3 } = 221 - 6.77 t ^ { 2 } - 0.6 t$$
D) ​ $R _ { 3 } = 739 - 5.23 t ^ { 2 } + 0.6 t$
E) ​ $R _ { 3 } = 739 - 5.23 t - 0.6 t ^ { 2 }$