Select the correct answer from each drop-down menu. consider the first four terms of an arithmetic sequence below.

The explicit formula for an arithmetic sequence is  an = a1 +  d(n - 1)   where a1 is the first term and d = common difference.  For this sequence  a1 is 7 and  d =  13- 7 = 19 - 13 = 25 - 19 = 6

So explicit formula required = 7 + 6(n - 1)

x = 23.78

step-by-step explanation:

step-by-step explanation:

points a and b are equidistant from the desired line, so the line you find by using them will go through point r.

using points other than a and b will give the desired line only if they are equidistant from r. if they are randomly located, the perpendicular line you create will not necessarily go through point r, hence will not be a solution to the problem.