Find the nth term of 7,15,23,31,...

I think  

47

and

55

Step-by-step explanation:

I think that each number is the previous one plus 8;

7

+

8

=

15

15

+

8

=

23

23

+

8

=

31

31

+

8

=

39

So, next will be:

39

+

8

=

47

47

+

8

=

55

the nth term of the sequence is

Tn = 8n - 1

Step-by-step explanation:

as here

t1 = 7 = 8*1 - 1

t2=15 = 8*2 -1

t3 = 23 = 8*3 -1

t4 = 31 = 8*4 -1

step-by-step explanation:

if you want to solve percent error follow these steps.

1. subtract the accepted value from the experimental value.

2. take the absolute value of step 1.

3. divide that answer by the accepted value.

4. multiply that answer by 100 and add the % symbol to express the answer as a percentage.

if you want to solve percent of change just do this.

1. work out the difference (increase) between the two numbers you are comparing.

2. divide the increase by the original number and multiply the answer by 100. if your answer is a negative number then this is a percentage decrease.

hope this : )