The price of a video game system plus 9% sales tax

choice b

step-by-step explanation:

f(x) = 88x^2 -264x + 300

the line of symmetry of a parabola is defined by

h = -b/2a

where ax^2 +bx+c=0

so

h = - -264/ (2*88)

h = 3/2

so x = 1.5

i’m kinda new to precal but your answer should be 21. hope i got it right.

step-by-step explanation:

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