LaShawn wants to buy some music online. There are two plants to choose from. The first plane is a flat rate of $1.29 per download. The second plane has a membership fee of $21 and a fee of $.99 per download. Let Xthe number of downloads and C be the cost. When are the costs of the two planes equal to each other?

The 64th term of the arithmetic sequence is -1075.

Step-by-step explanation:

Arithmetic sequence:

In an arithmetic sequence, the difference between consecutive terms, called common difference, is always the same.

The nth term of an arithmetic sequence is given by:

In which is the first term.

−4,−21,−38

First term -4, so

Common difference of

Thus

Find the 64th term of the arithmetic sequence

This is . So

The 64th term of the arithmetic sequence is -1075.