Answer:
f(3) = -2
Step-by-step explanation:
Given the f(x) = -2x² + 3x + 7, to find f(3):
We can substitute 3 as the value of x in the given function:
f(x) = -2x² + 3x + 7
f(3) = -2(3)² + 3(3) + 7
f(3) = -2(9) + 9 + 7
f(3) = -18 + 9 + 7
f(3) = -9 + 7
f(3) = -2
Therefore, f(3) = - 2.
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Answer: $2624
Step-by-step explanation:
Well since it’s square yards that means find the area first and since it’s a square and your given 1 side then it’s 8(8)=64. So there’s 64 square yards and since it’s $41 per square yard then multiply 64(41) which will give you $2624
Answer:
AB + BC = AC
BC = AC - AB
5x + 6 = 37 - (2 x + 3) = 37 -2 x - 3 = 34 - 2 x
7 x = 34 - 6 = 28
x = 4
BC = 5 x + 6 = 5 * 4 + 6 = 26
Check:
AB = 2 x + 3 = 2 * 4 + 3 = 11
AB + BC = 26 + 11 = 37
This looks like a parabola so:
y=x^2 - 20x + 15 --> x^2 - 20x +15=y
(x^2 -20x)=y - 15 --> (x - 10)^2=y - 15 +100 ( used complete the square)
(x - 10)^2=y + 85
