Mathematics

Mathematics

Problem

The

n^{\text{th}}

term of an arithmetic sequence is given by

u_n = 15 - 3n

. a. State the value of the first term,

u_1

. b. Given that the

n^{\text{th}}

term of this sequence is

-33

, find the value of

n

. c. Find the common difference,

d

.

Browse the problem library