Answer:
Part 1) Area of rectangle 
Part 2) Area of semicircle 
Par 3) Total area of grass 
Step-by-step explanation:
we know that
The total area of grass is equal to the area of rectangle minus the area of semicircle
step 1
Find the area of rectangle
The area of rectangle is equal to

step 2
Find the area of semicircle
The area of semicircle is equal to

we have
-----> the radius is half the diameter
substitute


step 3
Find the total area of grass

B) y = 5x + 15 and y = -5x + 15 I think.
I wish I knew this one also
Answer:
false
Step-by-step explanation:
x=4andy=7
2×4+7 isnot equal to 7
I think the answer is option 3.