Help me plzzz

Stefan bought 3 hamburgers and 4 fries for a total cost of $26.50.

Find the zeros of each function. f(x) = 6x^2 - 7x - 20

Tim open up a new saving account with a $50 deposit and plant to deposit $20 per week into the same account.write an expression to represent the total amount in his savings account.

We have 339 ounces of jam to be divided up equally for 12 people how muny ounces will each person get