If m Please help me im so lost

Find the value of the cosine for angle a

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

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 .