Haley and Nicole stopped at the school bookstore for extra supplies. Haley bought8 pencils and 3 folders and spent$10.39. Nicole bought 5 pencils and 4 folders and spent $10.51.How much does a folder cost?

idc

step-by-step explanation:

idk

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8

its the second choice.

step-by-step explanation:

the elements in the range will be 7 less than the elements in the domain.

30,40,50 is correct answer