Question

If an=4-7n then c.d
A)-3 B)7 C)-7 D)3

Answer 1

Answer:

Step-by-step explanation:

Put values of n one by one so as to get a1 a2 ...

Put n=1

a1=4-7 (1)

=-3

If n=2

a2=4-7(2)

=-10

Now.

C.D=a2-a1

C.D=-10-(-3)

CD=-7

ANS IS -7