Francisco is a songwriter who collects royalties on his songs whenever they are played
in a commercial or a movie. Francisco will earn $30 every time one of his songs is
played in a commercial and he will earn $90 every time one of his songs is played in a
movie. Francisco earned a total of $360 in royalties on 8 commercials and movies.
Graphically solve a system of equations in order to determine the number of
commercials, x, and the number of movies, y, on which Francisco's songs were
played.
y Click twice to plot each line. Click a line to delete it.
20
19
18
17
16
15
14
43
12
11
10
9
8
0
12 13 14 15 16 17 18 19 20
