If the equation is given in factored form and the roots are real, then you can identify the x-coordinate of the vertex by averaging the 2 root values. For example, if the roots are -2 and 5, the x-coord. of the vertex is (-2+5)/2, or 3/2.
Once you have this x value, subst. the value into the given equation to calculate y. Then write the vertex as (x,y).
so, they already used 4,885.78 this month, but whatever all five family members can use total for a month is 7,250.50, so since they already used 4,885.78, they have left 7,250.50 - 4,885.78 = 2364.72.
3 + (-4) is the same thing as 3 - 4.
3 - 4 = -1
Hope this helped :)
The surface area of the cylinder to the nearest tenth is: 628.3
The surface area without rounding is: 628.32
I believe he should add 2ft to the height of the tree as well
