Please help me, I'm terrible at math

$40.50

Step-by-step explanation:

Commission is easily calculated, as you only need two parts: total value of sales generated, and the commission percentage that the seller takes home. All you do is multiply the two numbers. The formula is shown below:

don't know what that says sorry i can't you

step-by-step explanation:

idk what it says

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for