1. a teacher asked the students to create a formula for the sequence 5, 8, 11, 14,
a. anthony came up with the formula:
an = 5 + 3(n-1)
•
is his formula correct and how do you know?
•
is it an explicit or recursive formula?

Good evening ,

Is his formula correct and how do you know : Yes

Is it an explicit or recursive formula : explicit

Step-by-step explanation:

an = a1 + (n-1)r

a1 = 5

r = 8-5 = 3

Then an = 5 + 3(n-1).

:)

what is the model?

step-by-step explanation:

really really sorry if i'm

-12 -5(x + 4) = 3x

-12 - 5x - 20 = 3x

-12 - 20 - 5x = 3x

-32 - 5x = 3x

    + 5x   + 5x

-32 = 8x

8         8

- 4= x