Answer:

Step-by-step explanation:
Hi there!
Because we're given the vertex of the parabola, we can determine its equation in vertex form:
where the vertex is 
Plug in the vertex (0,0)

Now, we must solve for a. Plug in the given point (-2,3) and solve for a:

Therefore, the value of a is
. Plug this back into
:

I hope this helps!
Answer:
The simplest form is 6m+91.
Step-by-step explanation:
Consider the given information.

First, remove the parenthesis by multiplying -10 and -3 inside the parenthesis.

Now, rearrange the like terms.

Combine the like terms.

Hence, the simplest form is 6m+91.