Gary has a box of coins that he uses to go to the gas station and get junk food. The box currently contains 53 coins consisting of nickels, dimes, and quarters. The number of quarters is equal to the number of nickels. The total value of
coins is $5.80. What is the sum of quarters and dimes?

Find the domain of the function  [tex]f(x) = \sqrt{3x - 7} [/tex]in interval form, the domain of f is what? in advance.

Monica build a remote control toy airplane for science project to test the plane she launched it from the top of a building the plane travel a horizontal distance of 50 feet before landing on the ground a quadratic function which models the height of the plane in feet relative to the ground at a horizontal distance of x feet from the building is shown

I'm confused on this could anyone me and show me what i need to do to solve it.