A box has a mass of 4kg and surface area 4m². Calculate the pressure exerted by the box on the floor.
​

whaere is the picture

step-by-step explanation:

wouldn't that be a) 1

4=4x then divide 4 on both sides and you get x=1

(a) x intercepts: -6 and 2

you can obtain these by solving the equation 0=x^2 +4x-12 using your favorite quadratic formula. but it is easy to verify -6 and 2 indeed satisfy this equation.

(b) y intercept: -12

this is obtained by setting x=0: 0^2+4*0-12 = -12

(c) the minimum value is: -16 (this is the vertex)

you can get the vertex by rewriting the equation into the form:

there is no global or local maximum as the function goes to infinity, so only in the limit sense: +infinity.