You use substitution to solve a system of equations and,
after simplifying the equations, end with an expression
that says 0 = 4. What does that say about the the lines
and about the number of solutions to the system?

What is the reflection image of (5,-3) across the line y = -x?

You paid 28.00 for 8 gallons of gasoline. how much would you pay for 15 gallons of gasoline?

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?