Here are the prices of some items and the amount of sales tax changed on each item in Texas. What is the sales tax rate in Texas?

Can someone me with this problem . show your work .

The sum of two numbers is 86, and their difference is 20. find the two numbers

Which of the following equations are equivalent to -2m - 5m - 8 = 3 + (-7) + m? -15m = -4m -7m - 8 = m - 4 -3m - 8 = 4 - m m - 4 = -7m - 8 -8 - 7m = -4 + m -8 - 3m = 4 - m