Trina has two brothers. One brother is 7 years older than Trina and the otherbrother is 7 years younger than Trina. The product of her brothers’ ages is 95. a. If x represents Trina’s age, write an equation to describe the product of her brothers’ ages. b. Solve the equation for x. How old is Trina?

you probably already have the answer but anyways it's b. 15.0

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

x-3y=4

step-by-step e