Riley is going to a carnival that has games and rides. Each game costs $1.25 and each ride costs $3.75. Riley spent $45 altogether on 16 games and rides. Graphically solve
a system of equations in order to determine the number of games Riley played, x,
and the number of rides Riley went on, y.

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

Jordan has $5.37, which he is using to buy ingredients to make salsa. he is buying one red pepper for $1.29 and three pounds of tomatoes. if jordan has exactly the right amount of money he needs, what is the price per pound of the tomatoes? choose the correct equation to represent this real-world problem. solve the equation and verify the reasonableness of your answer. a pound of tomatoes costs .

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?