Find the 10th term of the sequence defined by the given rule. 9. f(1) = 2, f(n) = f(n - 1) + 7
10. f(n) = n + 2
11. f(1) = 30, f(n) = 2 • f(n - 1) - 50
12. f(n) = ½ (n - 1) + 3
Please steps and ansers

it costs $20 to interview each person for a survey. find the cost to obtain a +- 3% margin of error.

step-by-step explanation:

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sorry i just need to anwers this to get points

step-by-step explanation:

the correct answer option is (2x-3)(2x+3).

step-by-step explanation:

we are given the following expression and we are to factorize it:

we are to find such factors that when multiplied they give a result of 36 (9 x 4 = 36) and when added they give a result of 0.

the two such factors of 36 are negative six and postive six.

factorizing the given expression to get:

therefore, the correct factorization of is (2x-3)(2x+3).