Please help me out with these no one is helping me.
Please anyone

Below.

Step-by-step explanation:

You find the values of y by substituting the values of x in the expression x^2 + 3x - 1.

So f(-4) = (-4)^2 + 3(-4) - 1 = 16-12-1 = 3

in the same way  f(-3) = -1, f(-2) = -3, f(-1) = -3,

f(0) = -1 and f(1) = 3.

Now plot the points (-4, 3) , (-3, -1) and so on  

Then you can read the values off this graph.

graph attached

when y=3,   x=1, x=-4

when x=-3.5, y=-23.75

just input the value of x in the equation:-3.5^2+3(-3.5)-1=-23.75

minimum value is the vertex:(-3/2,-13/2)

if a = 1,   and b = 2, then the answer is 47.99999999. if you round that to the nearest whole number, the answer is 48.

roots are from trees

step-by-step explanation: