IM SO DUMB PLS HELP ME I THINK THIS IS ALGEBRA I DONT KNOW??

Compare the cost of the bike trips from the two companies shown. for both the cost in a linear function of the number of days which statements is true

Me solve this problem, and someone clearly explain to me how to solve it.1.) use the value of the discriminant to determine if the given trinomials has 2 real solutions, 1 real solution, or no real solutions. a.  x2  − 4x  − 7 = 0b. 4r2  + 11r  − 3 = 0c. 3m2  + 7 = 0d.  t2  + 2t  + 1 = 0

Vertical angles must check all that apply