Which ordered pair needs to be removed in order for the mapping to represent a function?

(–3, –4)
(–2, –1)
(1, –3)
(3, 7)

Kathleen's gross annual salary is $56,820. what is the maximum amount of rent she can afford to pay? round your answer to the nearest dollar. question 1 options: $1146 $1326 $1656 $2368

The sum of two numbers is 12 and their difference is 18 what are the two numbers

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0