A cosmetic retailer surveyed 200 customers on which of their top two lipstick shades the customers preferred. Find the probability of randomly selecting a customer who prefers the pretty pink shade, given they are along the group of 30 years old?

answer: y=4000x+14000

step-by-step explanation:

, 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

13664

step-by-step explanation:

=cross multiply

=100 x = 13664