9. Given the perimeter of a triangle P= 5x + 3y - 2 and the length of two of the sides represented by the following expressions, 2x + 4y - 3 and -x+7y + 4. find an expression for the third side.

please answer this this will depend on my grade and i need to pass

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Write a story that matches with the expression 42x-5 pls hurry

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.