Which expressions are equivalent? * 2 points
2+6x AND 2(3x+1)
3(x+1) - (1+x) AND 2x+3
3x AND 4(x+1) -1x - 4
5.5 + 2.1x + 3.8x - 4.1 AND 1.4 + 5.9x
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What is the product of the radical expression. (7-2square root) (8+2 square root)

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2

Tim's phone service charges $26.39 plus an additional $0.21 for each text message sent per month. if tim's phone bill was $31.64, which equation could be used to find how many text messages, x, tim sent last month?