It costs $0.50 to download an individual song in four dollars to download an album. Jada has $15 to spend downloading music. 1. Complete the table
2. Write an equation relieving number of individual songs ($) and the number of albums (A)

1.

Number of individual songs, s                                  Number of albums, a  

                    6                                                                            3  

                  22                                                                           1

                   30                                                                          0

If Jada buys 6 songs, she would have spent;

= 6 * 0.5 = $3

This would leave her with = 15 - 3 = $12

With each album costing $4, she can buy = 12/4 = 3 albums

If Jada buys 1 album, she would have spent $4

This would leave her with = 15 - 4 = $11

With each song costing $0.50, she can buy = 11/0.5 = 22 songs

If Jada buys 30 songs, she would have spent;

= 30 * 0.5 = $15

This would leave her with = 15 - 15 = $0

She wouldn't be able to buy any albums.

2. One song costs $0.50 so representing that would be;

= 0.50s

One album costs $4 so representing that is;

= 4a

Jada has $15 to spend so the songs and albums must add up to $15.

Equation therefore is;

0.5s + 4a = 15

a_n = a_1 + (n - 1)d

the first term is 6.

the common difference d = ?

when you find d, replace n with 7 and d with the common difference to find your answer.