Which of the following equations could model the quadratic graphed below: A. f(x) = -2x²+4x+1
B. f(x) = x²-5x-3
C. f(x) = -2x²+x-3
D. f(x) = -x²+5x+3
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Which quadratic function best fits this data? x y 1 32 2 78 3 178 4 326 5 390 6 337 a. y=11.41x2+154.42x−143.9 b. y=−11.41x2+154.42x−143.9 c. y=11.41x2+154.42x+143.9 d. y=−11.41x2+154.42x+143.9

If square root x = -7, then x= -49 true or false

Out of $20$ creepy-crawly creatures in a room, $80\%$ are flies and $20\%$ are spiders. if $s\%$ of the total legs belong to spiders, what is $s$?