Respuesta :

MrNooby
Hello there!

C. -a^2-a+12 is your answer. 

Hope this helps!

Answer:

Step-by-step explanation:

We are given the multiplication of two parenthesis. To find the product we can use the concept of FOIL

so

[tex](-a+3)(a+4) = -a*a-a*4+3*a+3*4[/tex]

[tex]=-a^{2} -4a+3a+12[/tex]

combine the like terms to get this

[tex]=-a^2-a+12[/tex]

so the third option is the correct one.