The explicit rule for an arithmetic sequence is an=8.7+(-1.4)(n-1) what is the value of the 47th term? round to the nearest tenth, if necessary.
a. –55.7
b. –26.4
c. 45.6
d. 65.8

Option 'A' is correct.

Explanation:

Since we have given that

The explicit rule for an arithmetic sequence is

We need to find the value of 47th term,

We will put the value of n = 47

So, we get,

Hence, Option 'A' is correct.

answer: a video game has three difficulty levels: easy, medium, and expert. the game's scoring works in such a way that a player has to score a fixed number of points to advance to the next level, and then the scoring starts over. the total score needed to clear all three difficulty levels is 7,500. two times the number of points needed to clear the easy level is 500 more than the number of points needed to clear the medium level. twice the number of points needed to clear the medium difficulty level is 1,500 more than the number of points needed to clear the expert level. if x, y, and z represent the easy, medium, and expert levels, respectively, and a is the coefficient matrix of the system of equations modeling this situation, identify the inverse matrix, a-1, and the solution matrix, x, of the system of equations.

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