Question

The sales of homes in a new development have been increasing. In January, 8 homes were sold, in February, 12 homes were sold. In March, 16 homes were sold. This pattern continued for the remainder of the year.

What is the explicit rule that can be used to find the number of homes sold in the nth month of the year?




an=4n−4

an=−4n+4

an=−4n−4

an=4n+4

Answer 1

an = 4n + 4

This is an example of a problem that can be solved using process of elimination. Using the answer choices that are given, you can insert values for n and then solve:

4 (1) + 4 = 4
4 (2) + 4 = 12
4 (3) + 4 = 16