Which of the following functions is graphed below? y= {x^2 + 3, x _> 4
x + 4, x < 4}

y= {x^2 + 3, x > 4
x + 4, x _< 4}

y= {x^2 + 3, x < 4
x + 4, x _> 4}

y= {x^4 + 3, x _< 4
x + 4, x > 4}

The answer would be b ! explanation: the formula for sa *surface area * is 2×l×w+2×l×h+2×w×h so in this case l=4w=12h=8so you use the formula to solve it and it give you the answer of 352^cm^2

First locate the turning point (vertex) of the graph. which is at the coordinates x=5 and y=9 or (5; 9).to determine whether it's a maximum or mininum value, you have to discern whether the vertex's y-value is the highest value or lowest value the graph can reach. since the vertex's y-value, 9 is the highest value the graph can reach, it will be a maximum.another basic way to determine whether the vertex's value is max or min is to see if the graph is smiling or sad. if it's smiling, the turning point/vertex would be a minimum, while a sad parabola would have a maximum y-value at the vertex.