After one customer buys 4 new tires, a garage recycling bin has 20 tires in it. after another customer buys 4 tires, the bin has 24 tires in it.

what is the explicit formula to represent the # of tires in the bin as an arithmetic sequence? and how many tires are in the bin after 9 customers buy all new tires?

Arithmetic sequence formula is:

After 9 customers there are 52 tires in the bin

Step-by-step explanation:

The general arithmetic sequence formula is:

where is the first term, is the nth term, n is the term position and d is the common difference.

Assuming = 20

The second term is 24, then:

d = 24 - 20 = 4

So,  for this case, the arithmetic sequence formula is:

With n = 9:

2,600 divided by 80 = 32.5

step-by-step explanation:

6 hours 48 min

step-by-step explanation:

68÷5=13.6

13.6×30=408min=6 hours 48 min.

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