Which formula can be used to describe the sequence? 1 point 2 comma 3 comma 7 point 5 comma 18 point 7 5 comma dot dot dot
A
f of x is equal to 2 point 5 times 1 point 2 raised to the x minus 1 powerB
f of x is equal to 1 point 2 times 2 point 5 to the x th powerC
f of x is equal to 2 point 5 times 1 point 2 to the x th powerD
f of x is equal to 1 point 2 times 2 point 5 raised to the x minus 1 power