Answer:
The area of the section for the picnic tables is 
Step-by-step explanation:
we know that
The area of the schoolyard is equal to the area of a rectangle plus the area of a triangle
so

The area of the triangle is equal to

Answer: 11
Step-by-step explanation: You divide 495/45 and you get 11
Answer:
256h28k8
Step-by-step explanation:
The idea is to use the tangent line to
at
in order to approximate
.
We have


so the linear approximation to
is

Hence
and
.
Then

10 books cost $30. To figure it out, it's just 3 times the number of books. XD