A) Work out the sizes of the unknown angles and label them on the diagram.
d
63°
a
b
C
h
e
g

b/e/g=63

d/c/f/h=117

Step-by-step explanation:

b , e and g=63

d,c,f, and h = 63

a=b=e=g= 63°

d=c=h=f= 180°-63°= 117°

y = - 6

step-by-step explanation:

given the point (- 2, y) lies on the graph then it is a solution of it's equation.

substitute x = - 2 into the equation for value of y

y = 3(- 2) = 3 × - 2 = - 6

the point on the graph is (- 2, 6)

f(2x−x2)=−3x2+6x−1

step-by-step explanation:

set up the composite function and evaluate.

f(2x−x2)=−3x2+6x−1