Answer:
156 square feet
Explanation:
The area of Brian's rectangular garden, in square feet, can be found by using the expression 6(2x + 5y).
If x = 3 and y = 4
Substituting
6(2 × 3 + 5 ×4) square feet
6(6 + 20) square feet
Using Distributive property
6(6 + 20) square feet =( 6 × 6) + (6 × 20) square feet
6(6 + 20) square feet =(36+ 120) square feet
6(6 + 20) square feet = 156 square feet
Therefore, the area of Brian's rectangular garden, in square feet is 156 square feet