What is f(-2) when f(x) = - 3x + 4 ?
98068
10 coz f(-2)=\n       -3(-2) +4 .\nyou just plug in the value for x that is f(x)= f(-2) into the equation \nso.. you plug in 3(x) = -3(-2) and solve it .\nhope this helps
162777
4(3x+2)-2(x-8) = -2x\n\n(12x+8)-(2x-16) = -2x\n\n12x+8-2x+16 = -2x\n\n12x-2x+2x+8+16 = 0\n\n12x+24 = 0\n\n12x = -24\n\nx  = -2 Answer.\n\nCheck by subst. the value of x\nto the original equation:\n\n4(3x+2)-2(x-8) = -2x\nSubst: x = -2\n4[3(-2)+2]-2[-2-8] ?=? -2(-2)\n4[-6+2]-2[-10] ?=? 4\n4[-4]+20 ?=? 4\n-16+20 ?=? 4\n4 = 4  Check
554172
Um...\n\n2(-X) + 3(-X) + X + 8\n\n-2X - 3X + X + 8\n\n-5X + X + 8\n\n-4X + 8\n\n8 - 4X
618071
simplify to f(x)=(sqrt(x-2)(x-3))/(x-4)(x+5)\nthen sub in 1/x\nto get (sqrt(1/x -2)(1/x -3))/(1/x -4)(1/x +5)
974938
I believe this is how you do it:\n\n(f o g)(x) = f[g(x)] = 3(-x^2) - 4 = -3x^2 -4\n\nNow that this formula is found, sub in 2;\n\n(f o g)(2) = -3(2)^2 - 4 = -3(4) - 4 = -12 - 4 = -16
932187
y = 3/2 (-4) -2 = -12/2 - 2 = -6 -2 =  -8\n\n(x,y) = (4,-8)
1005272
f(4) means 'rewrite f(x) = 2x - 5 with a "4" instead of an "x"', like this:\n\nf(4) = (2 * 4) - 5\n=8 - 5\n=3
818927
if you want f(3)\nyou will have f (2 +1) which leads us to know that 2 is x...\nsubstitute all x's with 2's and then your answer will be revealed
846663
(x+3)(x-1)\n\n x= -3\nx=1
107384
f(3) = 3(3-1)^2\n= 3(2)^2\n= 3 x 4\n= 12
216211
when x=0 \ny=f(x)=\n(-1/15)(-5)(3)^2(-1)^3=\n(-1/15)(-5)(9)(-1)=\n(5/15) *(-9)=\n(1/3)*(-9)=\n-9/3=-3\n\n(0,-3) y-intercept\n\n\nWhen y=0\n\n-1/15(x-5)(x+3)^2(x-1)^3=0 multiply by -15\n(x-5)(x+3)^2(x-1)^3=0\n\nso x-5=0 and x=5  or\n   x+3=0 and x=-3 or\n   x-1=0 and x=1\n\nso (5,0) (-3,0) and (1,0) are x intercepts.
522506
All you do is plug in that value for x...\n\nSo, (a)f(0)\n\nf(0) = (0)^2 - 7(0) + 10\nf(0) = 10\n\n(b)f(5)\n\nf(5) = (5)^2 - 7(5) + 10\nf(5) = 25 - 35 + 10\nf(5) = 0\n\n(c)f(-2)\n\nf(-2) = (-2)^2 - 7(-2) + 10\nf(-2) = 4 + 14 + 10\nf(-2) = 28\n\nHope that helps :)
1097258
It is (-2)^2 * (2)^-2\nIt can be simplified as (-2)^2 / (2)^2\n= (-2)*(-2) / (2)*(2)\n= 4 / 4\n= 1\n\nSo the cotrrect answer is 1
759378
More concisely, f(-5)=-8, f(-3)=-2, f(-2)=1, f(1)=10.\n\nf(x) can equal anything as long as it fits these points. It seems to form a linear line as shown above...
747340
-2x-x > -6 + 4\n-3x > -2 \nx < 2/3
735529
f(x)=-2x^4+6x+7\nf(-x)=-2(-x)^4+6(-x)+7\n=-2x^4-6x+7\nnether odd nor even
623250
substitute the x in the function for the 3.  that should give you:\n\nf(3) = (-5(3)^3)+(6(3)^2)-3-4  \n\nf(3) = (-135)+(54)-7   (simplified)        \n\nand your answer is:\nf(3) = -88