Which expression will simplify (3a + 6) (7a - 2)?

63a + 6

Step-by-step explanation:

we have to first simplify this

(3a+6)(7a-2)

21a-6+42a+12

63a+6

Step-by-step explanation:

Use FOIL method

(3a+ 6)(7a - 2) = 3a* 7a + (3a)*(-2) + 6*7a + 6*(-2)

                       = 21a² - 6a + 42a - 12   {Combine like terms}

                       = 21a² + 36a - 12

it would take 7/10 of an hour too fill the pool.

step-by-step explanation:

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step-by-step explanation: