When a helium balloon rises in the air, it expands. if the volume of the balloon doubles, what happens to the density of the helium inside it?

Has anyone here taken the orela elementary education subtest 2 (103)? if so can you link me videos, practice tests, or methods on what you did to pass it?

Which group of college students is typically offered scholarship? a. freshmen, sophomores, and juniors. b. biology, english, and engineering majors. c. hard workers, part-time students, and out of state students. d. first time freshmen, current students, and transfer students.

When do you think it’s best to take the psat (what grade year / when in the year)?