Convert the recursive form a1=7, an=3an−1
to the explicit form. (1 point)
Responses
an=3(7)n
A sub n is equal to 3 times 7 to the n th power
an=7(3)n−1
A sub n is equal to 7 times 3 raised to the n minus 1 power
an=7(3)n+1
A sub n is equal to 7 times 3 raised to the n plus 1 power
an=3(7)n−1