Find the area of the compound figure below

150

Step-by-step explanation:

The formula for the area of a triangle is (1/2)(b)(h)

1/2(10)(10)

5(10)

50 is the area of the triangle.

The formula for the area of a square is bh

10(10)

100 is the area of the square.

100+50=150.

150 square units is the area of the composite figure.

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50