john wants to make a 15 ml of 86% saline solution by mixing together a 90% saline solution and a 80% saline solution how much of each solution will be used?

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 .

Need same math paper but the back now i hope your able to read it cleary i need with hw

Math i have no idea how to do a and b