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6 December, 07:00

1. A rectangle is 6 inches longer than its wide. Write and simply an expression for the perimeter of the rectangle.

2. simply : 5+2 (3x + 4) + x

3. shelly lives 500 miles away. Paul drove 65 mph for 4 hours how many more miles will it take him to arrive at Shelly's house.

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  1. 6 December, 07:23
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    P = 2L + 2W

    L = W + 6

    P = 2 (W + 6) + 2W

    P = 2W + 12 + 2W

    P = 4W + 12

    5 + 2 (3x + 4) + x

    5 + 6x + 8 + x

    5 + 8 + 6x + x

    13 + 7x Stop Don't go any further. That's the 11th commandment: Thou shalt not combine unlike terms.

    Paul has a long drive. If Shelly waits up she better have some snacks

    4*65 + x = 500 The x stands for the number of miles left to go

    270 + x = 500 Subtract 280 from both sides

    x = 500 - 270

    x = 230

    Just so you know if he keeps going at 65 mph the amount time will be

    230/65 = 3.53 hours.
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