What is the vertex of g(x)=3(x+1)^2-12

 (-1,-12)

Step-by-step explanation:

This equation is in vertex form

g(x)=a(x-h)^2+k  where( h,k) is the vertex

g(x)=3(x+1)^2-12

Rewriting

g(x)=3(x- -1)^2+ -12

So the vertex is

    (-1,-12)

the formula of a slope:

we have the points (-2, 7) and (2, 3). substitute:

48 / 6 = x

in this case, x will equal the amount of money in each card!

x therefore will be 8.

trent had $8 in each birthday card.