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7. Salina finds the range of the function
y = -4x2 + 8x + 7 by calculating the vertex.
Her work is shown in the box below.
Determine her error and find the range of the
function.
4
6
8
vertex: ( 1, 11)
range: y = 11
©Maneuvering the Middle LLC, 2020

Sagot :

Answer:

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