Help me with this question on composite solids

21 + 70 + 17.5 = 108.5,  B is your answer

6 x 7 = 42

7 x 5 = 35 divided by 2 = 17.5

7 x 10 = 70

Add them all up to get 108.5

B. 108.5 ft²

Step-by-step explanation:

The shape is split up into 2 triangles and a rectangle. Find the area of those shapes then add them up in the end.

A(Right triangle) = 1/2(6)(7) = 21 ft²

A(Rectangle) = (7)(10) = 70 ft²

A(Left triangle) = 1/2(7)(5) = 17.5 ft²

A(Shape) = 21 + 70 + 17.5 = 108.5 ft²

ratio is 2 : 9

the answer is three

13.5 : 3

y = 3x+4

step-by-step explanation:

to find the slope

slope = (y2-y1)/ (x2-x1)

    = (-8-4)/ (-4-0)

    = -12/-4

  = 3

using the slope intercept form of a line

y= mx+b

we know the slope is 3

we know the y intercept is 4 ( the point where it crosses the y axis or x=0)

y = 3x+4