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