In 9 and 10, consider the system (5x + 15y = -10
x + 3y = k
9. For what value(s) of k will the system have infinitely many solutions
10. For what value(s) of k will the system be inconsistent?

What could explain what happened when the time was equal to 120 minutes

Steve wants to develop a way to find the total cost of any item including sales tax. the sales tax in his city is 6%. his friend jenna writes the expression x + 6x where x is the cost of the item. explain whether her expression is correct based on the situation.

What’s the answer ? use the picture to see the problem