Evaluate each expression for x = -7.
a. | x - 3 | b. | x + 3 |
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Tim's phone service charges $23.06 plus an additional $0.22 for each text message sent per month. if tim's phone bill was $28.56, which equation could be used to find how many text messages, x, tim sent last month?

Write the expression 7x^3-28xy^2 as the product of 3 factors

Acourt reporter is transcribing an accident report from germany. the report states that the driver was traveling 80 kilometers per hour. how many miles per hour was the driver traveling?