David and John are sharing a pizza. The pizza is cut into twelve pieces. David ate a quarter of the pizza. John ate 4 pieces. How many pieces are left?

David at 1/4 of the pizza: 1/4(12)= 3 pieces

John ate 4 pieces

12-(3 + 4)= 12 - 7 = 5 pieces of pizza left

Step-by-step explanation:

last one.

step-by-step explanation:

last one.

generally speaking, the others follow some sort of pattern that correlates to either linear (looks like a straight line) or sinusoidal (looks like an s).

the last one is just a random cloud of points that doesn't correlate to any particular known order.

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.