De la siguiente sucesión -30, -20, -10…
Encuentra el término 725 y la suma de los primeros 725 términos.

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.

4.

step-by-step explanation:

it have the same area.brainliest