Can you answer each one and have a step by step solution

Adding and subtracting matricesfind the value of each variable. x = and y = would

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?

Which type of graph would allow us to compare the median number of teeth for mammals and reptiles easily