What does it mean for an equation to express y in terms of x?

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

The table shows the number of students who signed up for different after school activities. activity students cooking 9 chess 4 photography 8 robotics 11 select the true statements about the information in the table.

The mass of a marine organism, in pounds, p years after it is born is given by the polynomial function r(p) = -4p2 + 300p. find the mass when p = 20 years.