B: 5(x+4)^2 Explanation: The “5” at the beginning of the equation represents stretch by five (multiplying the 1, 3, 5 rule, therefore making it over one up five, over one up fifteen, etc.) the +4 represents moving right 4 times.
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Answer:
60
Step-by-step explanation:
Because 30 is half of 60
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y=8(x^2 + 4x + 4) +17 + -32
Simplify:
y = 8(x^2 + 4x + 4) + 15
Use distributive property:
y = 8x^2 + 32x +32 - 15
Simplify:
y = 8x^2 + 32x +17
Complete the square using form ax^2+bx+c:
a = 8, b = 32, c = 17
vertex form = a(x+d)^2+e
d = b/2a and e = c-b^2/4a
d = 32/2*8 = 32/16 = 2
e = 17 - 32^2/4*8 = 17-1024/32 = 17-32 = -15
Vertex form = y = 8(x+2)^2 + -15