PLS HELP FAST! Write the first four terms of a decreasing Arithmetic Sequence. Use this to describe, in your own words, how to write both the Recursive and the Explicit Formulas for the sequence. Show how to use the
Recursive Formula to find the next two terms

Write the first five terms of the sequence defined by the recursive formula.

a1=9an=3an−1−20, for n≥2" role="presentation" style="font-family: proxima-nova, sans-serif; -webkit-font-smoothing: subpixel-antialiased; padding: 1px 0px; margin: 0px; font-size: 15.696px; vertical-align: baseline; background: transparent; border: 0px; outline: 0px; display: inline-block; line-height: 0; text-indent: 0px; text-align: left; text-transform: none; font-style: normal; font-weight: normal; letter-spacing: normal; overflow-wrap: normal; word-spacing: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; position: relative;">a1=9an=3an−1−20, for n≥2

The first term is given in the formula. For each subsequent term, we replace \displaystyle {a}_{n - 1}an−1 with the value of the preceding term.

n=1a1=9n=2a2=3a1−20=3(9)−20=27−20=7n=3a3=3a2−20=3(7)−20=21−20=1n=4a4=3a3−20=3(1)−20=3−20=−17n=5a5=3a4−20=3(−17)−20=−51−20=−71" role="presentation" style="font-family: proxima-nova, sans-serif; -webkit-font-smoothing: subpixel-antialiased; padding: 1px 0px; margin: 0px; font-size: 15.696px; vertical-align: baseline; background: transparent; border: 0px; outline: 0px; display: inline-block; line-height: 0; text-indent: 0px; text-align: left; text-transform: none; font-style: normal; font-weight: normal; letter-spacing: normal; overflow-wrap: normal; word-spacing: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; position: relative;">n=1a1=9n=2a2=3a1−20=3(9)−20=27−20=7n=3a3=3a2−20=3(7)−20=21−20=1n=4a4=3a3−20=3(1)−20=3−20=−17n=5a5=3a4−20=3(−17)−20=−51

where is the shape my dude?

step-by-step explanation:

step-by-step explanation:

12: 00 p.m. to 7: 00 p.m. is a total of 7 hours.

4: 00 p.m. to 7: 00 p.m. is a total of 3 hours.

this means that from 4: 00 p.m to 7: 00 p.m. this represents 3/7 of what was lost from 12: 00 p.m. to 7: 00 p.m.

after knowing this, after doing 11,600 - 6,800 = 4,800

4,800 represents 3/7 of what was lost for 7 hours.

we then divide 4,800 by 3 which gets 1,600.

because we know that 1,600 represents 1/7 of how much water was lost, we just have to multiply by 7, which gets 11,200.   after adding 11,200 to how much water was left at 7: 00 p.m. which was 6,800. 11,200 + 6,800 = 18,000

this means that the pool originally had 18,000 gallons in the pool.

you can also check your work by doing 18,000 - 4(1600), which becomes           1800 - 6400 which gets you 11,600.