algebra

posted by lee

Could someone check my work;
1. Generate the first five terms in the sequence using the explicit formula.

yn = –5n – 5

–30, –25, –20, –15, –10
30, 25, 20, 15, 10
–10, –15, –20, –25, –30(my answer)
10, 15, 20, 25, 30

2. What is the 15th term in the sequence using the given formula?

cn = 3n – 1

14
57
44
–44(my choice)

3. Write a recursive formula for the sequence 7, 13, 19, 25, 31, ... Then find the next term.

an = an– 1 + 6, where a1 = 7; 37(my choice)
an = an– 1 + 6, where a1 = 37; 7
an = an– 1 – 6, where a1 = 6; –23
an = an– 1 – 6, where a1 = 7; –8

4. Write a recursive formula for the sequence 7, 4, 1, –2, –5, .... Then find the next term.

an = an–1 – 3, where a1 = –8; 7
an = an–1 – 3, where a1 = 7; –8(my answer)
an = an–1 + 3, where a1 = –3; 22
an = an–1 + 3, where a1 = 7; –8

5. Write an explicit formula for the sequence 8, 6, 4, 2, 0, ... Then find a14.

an = –2n + 10; –16
an = –2n + 8; –18
an = –2n + 8; –20
an = –2n + 10; –18
Dont understand this problem.

1. Reiny

#5.
In the explicit formula, you can find any term directly , unlike a recursive, where you have to know the previous term

so if n = 1, we should get 8 from the formula
look at the first and last
the both give you
a(1) = -2(1) = 10 = 8
a(14) = -2(14) + 10 = -28+10= -18
so it has to be the last one.

2. a

Multiple Choice
1. Generate the first five terms in the sequence using the explicit formula.

yn = –5n – 5 (1 point)
(0 pts) –30, –25, –20, –15, –10
(0 pts) 30, 25, 20, 15, 10
(1 pt) –10, –15, –20, –25, –30
(0 pts) 10, 15, 20, 25, 30
1 /1 point
2. What is the 15th term in the sequence using the given formula?

cn = 3n – 1 (1 point)
(0 pts) 14
(0 pts) 57
(1 pt) 44
(0 pts) –44
0 /1 point
3. Write a recursive formula for the sequence 7, 13, 19, 25, 31, ... Then find the next term. (1 point)
(1 pt) an = an– 1 + 6, where a1 = 7; 37
(0 pts) an = an– 1 + 6, where a1 = 37; 7
(0 pts) an = an– 1 – 6, where a1 = 6; –23
(0 pts) an = an– 1 – 6, where a1 = 7; –8
1 /1 point
4. Write a recursive formula for the sequence 7, 4, 1, –2, –5, .... Then find the next term. (1 point)
(0 pts) an = an–1 – 3, where a1 = –8; 7
(1 pt) an = an–1 – 3, where a1 = 7; –8
(0 pts) an = an–1 + 3, where a1 = –3; 22
(0 pts) an = an–1 + 3, where a1 = 7; –8
1 /1 point
5. Write an explicit formula for the sequence 8, 6, 4, 2, 0, ... Then find a14. (1 point)
(0 pts) an = –2n + 10; –16
(0 pts) an = –2n + 8; –18
(0 pts) an = –2n + 8; –20
(1 pt) an = –2n + 10; –18
1 /1 point

3. Potato

^^

4. bob

^^

5. Becky

^^^^100%^^^^

6. Joe

You are a godsend
For everyone else:
C
C
A
B
D

7. Tom

Much love

8. booty hunter

c c b a a c

9. YEET

booty hunter is WRONG XD

10. booter hunter=liar

yet booty hunter lies

11. booty hunter is gay

Why would you attempt to give wrong answers when there is multiple people saying that other was correct? People are hella f**cing dumb.

12. Pickle

Lol, you all talk like ur in middle school xD jus ignore the wrong answers

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