The zeros of the function would be x=4.02 and x=0.98. Found using the quadratic formula.
M=1.5 because the slope formula is m=y2-y1/x2-x1
f(-2) means the x value is -2 and you need to find the y value at that point.
At x = -2 the line crosses the y axis at y = 2
f(-2) = 2
If the dimensions are tripled then the surface area will increase by a factor of 3^2
That is by 9.
The volume will increase by a factor 3*3 (= 27).