Which of these is a formula that can be used to determine the nth term of the arithmetic sequence 15, 27 39 51

an=3+12n

Step-by-step explanation:

The sequence is

15, 27, 39, 51

The first term: a 1 = 15

The common difference of this sequence : d = 27 − 15 = 12

The nth term of an arithmetic sequence is given by formula

an=a+(n−1)d

So a n for this sequence will be:

an = 15 +(n−1) 12

an =(15)+12n−12

an = 3+12n

4+n=5

step-by-step explanation:

this is because the four is four hours and the n represents the 1 extra hour over the weekend.

b= i'm srry i don't know that one.

4+n=5 n=1 because if vernon plays 5 hours a week then 4+1=5 hours.

hope this : )

step-by-step explanation:

1. practice, practice & more practice

2. review errors

3. master the key concepts

do not try to memorise the processes.

4. understand your doubts.

5. create a distraction free study environment

6. create a mathematical dictionary

7. apply maths to real world problems.