For 15:
equate both left-hand sides and you will get a quadratic ..
Solve it for x, you get:
x=4, x=-1.75
B
For 16:
the vertex would be (h,k) = (2,4)
A
equate both left-hand sides and you will get a quadratic ..
Solve it for x, you get:
x=4, x=-1.75
B
For 16:
the vertex would be (h,k) = (2,4)
A