Blake is a songwriter who collects royalties on his songs whenever they are played in a commercial or a movie. blake will earn $20 every time one of his songs is played in a commercial and he will earn $110 every time one of his songs is played in a movie. blake earned a total of $530 in royalties on 13 commercials and movies. determine the number of commercials and the number of movies on which blake's songs were played.

It was played in 3 movies and in 10 commercials.

Step-by-step explanation:

110 times 3 = 330

530 minus 330 = 200

200 divided by 20 = 10

(n^3 - n)

= n(n-1)(n+1)

since it is divisible by 3 and 2 ,because it is a multiple 3 consecutive number

if, n-1 is odd then n+1 is also odd, then it is a multiple of 9

but if, n-1 is even then n+1 is also even, then it is a multiple of 4

so, largest multiple = max(9*2, 4*3) = max(18, 12) = 18

step-by-step explanation:

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