the 1 is the h and the -2 is the k
f(x) = a(x - h)^2 + k
f(x) = a(x-1)^2 -2
to find a substitute x=3, y=6 in
6= a(3-1)^2 -2
6 =a *2^2 -2
add 2 to each side
8 = 4a
a =2
f(x) = 2(x-1)^2 -2 this is the vertex form
distribute to get the standard from
f(x) = 2(x^2-2x+1) -2
2x^2 -4x+2-2
f(x) =2x^2-4x is the standard form
Choice A
Answer:
y=2x+8
Step-by-step explanation:
Merchandise sold = $900
Commission = 30%
30% of $900 = 0.3 x 900 = $270
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Answer: She earned $270.
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The sum of 8m and 3 is 8m + 3
Answer is B. 8m + 3
Answer:$66
Step-by-step explanation:
