Question

Find 1st - 4th term and then the 10th term for:
A: rule is n^2+3
B: rule is 2n^2

Answer 1

see below

Explanation:

n^2+3

n=1: 1^2+3 = 1+3 =4

n=2: 2^2+3 = 4+3 =7

n=3: 3^2+3 = 9+3 =12

n=4: 4^2+3 = 16+3 =19

n=10: 10^2+3 = 100+3 =103

2n^2

n=1: 2*1^2 = 2*1 =2

n=2: 2*2^2 = 2*4 =8

n=3: 2*3^2 = 2*9 =18

n=4: 2*4^2 = 2*16 =32

n=10: 2*10^2 = 2*100 =200

Answer 2

A

n^2+3

1. 1^2+3= 4

2. 2^2+3= 7

3. 3^2+3= 12

4. 4^2+3= 19

5. 10^2+3= 103

B

2n^2

1. 2*1^2=2

2. 2*2^2= 8

3. 2*3^2= 18

4. 2*4^2= 32

5. 2*10^2= 200