PLEASE HURRY!
What is the value of the expression when x = 15 and y = 3?

A. 5

B. 10

C. 15

D. 20

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

Asmall book publisher knows that 26 books weigh 41 lbs. how much do 40 books weigh?

15. jiovanni is looking in to two different companies that offer study guides for math exams.test prep 101 charges a $5 flat fee and an additional $0.25 per problem.math charges a $2 flat fee and an additional $0.50 per problem.how many prablems would make the costs of the two companies be equal? varibles: equations/eniqualities{ {