Can someone please help me with math. I really need help.

Solve the equation 3x2 + 19x + 9 = 0 to the nearest tenth.

An equation where variables are used to represent known values—function notation true or false

Part a: sam rented a boat at $225 for 2 days. if he rents the same boat for 5 days, he has to pay a total rent of $480. write an equation in the standard form to represent the total rent (y) that sam has to pay for renting the boat for x days. (4 points)