Question

Which explicit formula was used to generate the first 5 terms of the sequence?
5, 3, 1, -1, -3

Answer 1

hint: each term (except the first) is obtained by adding -2 to the previous one.

Answer 2

are you familiar with sigma notation?

Answer 3

um not to familiar

Answer 4

a. an = 7n - 2
b. an = n + 5
c. an = -2n + 7
d. an = 2n - 7
im thinking its C

Answer 5

oh i see they want it in that form

Answer 6

yes i forggot to mention

Answer 7

n is the cardinal number of the each number - that is first, second etc

Answer 8

an means the 'nth term'

Answer 9

term number

Answer 10

which one of the options fits the first term 5 when n = 1?

Answer 11

yes or term number

Answer 12

clue - there are 2

Answer 13

umm B i think

Answer 14

no if n = 1 , first term = 1 + 5 = 6

Answer 15

a and c give 5 when n = 1 but only one of these work for the other terms

Answer 16

so b and d are wrong

Answer 17

oh! ok

Answer 18

follow?

Answer 19

right thanks