Question

find a function that describes the sequence. Use y for the term in the sequence and n for its place in the list. Then use the function to find the next three terms in the sequence.
21, 22, 23, 24, . . .
a.
y = 20n +1; 101, 121, 141
c.
y = 21n; 105, 126, 147
b.
y = n + 20; 25, 26, 27
d.
y = 22n –1; 109, 131, 153