Pls answer for 20 points

7x^2-9x+5=0 find the discriminant and number of real solutions

One-fourth of a number is 14. find the number.

Raul works at a movie theatre. the function f(x) represents the amount of money raul earns per ticket, where x is the number of tickets he sells. the function g(x) represents the number of tickets raul sells per hour, where x is the number of hours he works. show all work to find f(g( and explain what f(g(x)) represents.