what is f(x) = 2x2 28x – 5 written in vertex form? a.f(x) = 2(x 7)2 – 19 b.f(x) = 2(x 7)2 – 103 c.f(x) = 2(x 14)2 – 14 d.f(x) =
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sinR =
noting that the sin ratio =
opposite to ∠P is QR and hypotenuse is PQ ( opposite right angle )
Use the slope formula 
and plug in the values for x and y.
