Hello! So I understood your question as what M means. M is 49, 49-28=21
Answer:
x=3
Step-by-step explanation:
Answer:

Step-by-step explanation:
<em>Look at the picture.</em>
We have
square with side length a = 9
trapezoid with base lengths b₁ = 9 and b₂ = 6 and the height length h = 6
right triangle with legs lengths l₁ = 3 + 6 = 9 and l₂ = 6
The formula of an area of a square

Substitute:

The formula of an area of a trapezoid:

Substitute:

The formula of an area of a right triangle:

Substitute:

The area of the shape:

Amount after 3 years = 4000( 1 + 0.04)^3 = $4,499.46 answer