Answer:
B
Explanation:
First we need to find the area of the entire yard.
80x20 = 1600ft
Then, we need to find the area of the garden.
10x15 = 150ft
Lastly, we need to subtract the garden from the entire yard.
1600-150 = 1450ft
Let's look at the choices....
A.. 150? no... It's 1450
B.. 1450? Yes!
C... 1550? No...
D.. 1600? Nope!