I really need help on thisss

77 in ^2 is the best estimate

Step-by-step explanation:

We can get the total area from the sum of the triangle and the semi circle

semicircle

1/2 the area of the semicircle

A = 1/2  pi r^2

   1/2 (3.14) ( 4^2)

    25.12

Now find the area of the triangle

The base is 16 -r = 16-4 = 12

The height is 8

A = 1/2 bh

   = 1/2 (8) (12)

   = 48

The total area is 25.12+48 =73.12      

because linear equations are a lot simpler than quadratics equations, and linear equations formula is a lot easier to memorize. that's why i think they're harder.

it is x=-4

step-by-step explanation: