If alice would to leave her house around 6: 30am and get back about 7: 15am, but its a 21 mintue walk to and back. will she make it back before 7: 15am or after

(x-5)1/2+5=2 what is a possible solution?

In a singing competition, there are 150 participants. at the end of each round, 40% of the participants are eliminated. how many participants are left after n rounds?

Which expressions equal 9 when x=4 and y=1/3 a. x2+6y b. 2x + 3y c. y2-21x d. 5 (x/2) -3y e. 3x-9y