The number 2.31 is 2,200 times greater than 1.05 . Find the correct value of x and y

What is the inverse of the function f(x)=4x+8

Inez has a phone card. the graph shows the number of minutes that remain on her phone card a certain number of days.

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