Topic 9 Review The quadratic function d = -5x2 + 38 models a runner's distance, in feet, from the bottom of a hill X seconds after the runner starts moving down the
hill. When does she get to the bottom of the hill?

The price of a particular stock is represented by the linear equation , where x represents the number of weeks the stock has been owned and y represents the price of the stock, in dollars. if this relationship continues, what is the price of the stock after it has been owned for 12 weeks? $92.55 $94.37 $100.52 $114.39

How do you solve a question like this?

Find the solution of this system of equation -7x+y=-20 9x-3y=36