The graph of a quadratic function is shown on the grid. 11
-2
2
5
9
8
1
-4
-6
-
-9
10
which function is best represented by this graph?
F
h(x) = x2 – 3x - 9
G
h(x) = x2 + 3x – 9
H
h(x) = x2 - 6x
n(x) = x2 + 6x

Which sum or difference identity would you use to verify that cos (180° - ∅) = -cos ∅? a. sin (α -β) = sin α cos β – cos α sin β b. cos (α -β) = cos α cos β – sin α sin β c. cos (α -β) = cos α cos β + sin α sin β d. sin (α + β) = sin α cos β + cos α sin β

How to solve a simultaneous equation involved with fractions?

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r