Determine a rational function with x intercepts at x=1 and x=3

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

Polygon abcde is reflected to produce polygon a′b′c′d′e′. what is the equation for the line of reflection?

James is playing his favorite game at the arcade. after playing the game 3 times, he has 8 tokens remaining. he initially had 20 tokens, and the game costs the same number of tokens each time. the number t of tokens james has is a function of g, the number of games he plays. write the function’s formula? t=