F(x)=-x^2+6x+9
find f(1)

f(1) is 16

Step-by-step explanation:

First you substitute x for 1

(1)^2 + 6(1) + 9

then you multply

1 + 6 + 9

then add like terms or in this case constant s

16

.25

step-by-step explanation:

answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°