A. Y=mx+b
m=slope
b= y - intercept
Triangle area = 8 x 3/2
= 12
12 x 2 = 24cm^2 for 2 triangles
Height of rectangle must be found, so use pythag on triangle
a^2+ b^2 = c^2
16 + 9 =c^2
C=5
A= 5 x 12
= 60
60 x 3 triangles in total is 180cm^2
180cm^2 + 24cm^2 = 204cm^2
Ans: 204cm^2
2.857 m away from the wall. because if it is 1.3 m off the ground when fired then you just subtract that from 2.9 to get 1.6 then divide that by sin (38.2) to get 2.857 m from the wall.
A because 30 times 29 is 870 and they give a card to everyone except themselves
