How you solve 7p+9=81

Compare the cost of the bike trips from the two companies shown. for both the cost in a linear function of the number of days which statements is true

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*