You a miguel cervantes de navas y colon, captain in the royal spanish army in seville in the year 1842. outside your barracks window is a stack of cannonballs, as shown in the illustration. on an idle afternoon you decide to calculate the number of cannonballs in the stack. what is the number of cannonballs.

650 cannonballs

Explanation step by step:

layer 12 is 12 ^ 2

The formula is:

n * (n + 1) * (2n + 1) / 6

n = 12

12 (12 + 1) (2 * 12 + 1) / 6

12 * 13 * 25/6 =

650

There are 650 cannonballs in this pyramid.

the correct answer is b. negative exponential growth.

step-by-step explanation:

you can tell it's an exponential function because it decreases rapidly then levels out and never touches the x-axis.

it is negative because the y-axis decreases as the x-axis increases.

therefore it is a negative exponential growth graph.

hope i !