Please help, I have no idea how to do it! The sequence $(a_n)$ is defined by $a_1 = \frac{1}{2}$ and
\[a_n = a_{n - 1}^2 + a_{n - 1}\]for $n \ge 2.$

Prove that
\[\frac{1}{a_1 + 1} + \frac{1}{a_2 + 1} + \dots + \frac{1}{a_n + 1} < 2\]for all $n \ge 1.$

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

jbankston is right, use thhe link and you should find the answer.

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