Roscoe must play 12 commercials during his 1-hour radio show. Each commercial is either 30 seconds or 60 seconds long. If the total commercial time during that hour is 10 minutes, how many commercials of each type does Roscoe play? Write a system of linear equations to represent this situation and solve.​

details

step-by-step explanation:

-362

step-by-step explanation:

(12)(4)+2(12)-34(12)+2(12)-3

  \/         \/         \/         \/

  48 +   24 -   408 + 24 - 3

      \   /               \   /

          72     -     432 - 3 = -363

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step-by-step explanation:

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.