15 Points :p Which of the following expressions would give a sequence with a first term of 2 and a common difference of 5? 2 - 5 n 2 n - 5 5 n - 3 5 n + 2

9514 1404 393

  5n -3

Step-by-step explanation:

Try n=1 in each expression and see which gives you a first term of 2.

  2-5n = 2-5·1 = -3

  2n -5 = 2·1 -5 = -3

  5n -3 = 5·1 -3 = 2 . . . . . this is the expression you want

  5n +2 = 5·1 +2 = 7

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Additional comment

For a common difference of 5, the coefficient of n must be 5. The second answer choice fails on that count also.

just do 5.2 + 2 ( 7.2) and 1/3 x 3 (.9) and youv'e got your equation. 0.9( 9/10) + 7.2 ^2 = 16.4 hope i could !

step-by-step explanation:

the answer is 8/21

hope this