Korra is carrying a bag of books that weighs 40 pounds. After picking up some books at school, the weight has increased by 36%. How many pounds does the bag weigh now?

An arrow is shot vertically upward at a rate of 180ft/s. use the projectile formula h=−16t2+v0t to determine at what time(s), in seconds, the arrow is at a height of 420ft. round your answer(s) to the nearest tenth of a second.

The system of equations graphed below has how many solutions?

Which expressions are equivalent to k/2 choose 2 answers: a k-2 b 2/k c 1/2k d k/2 e k+k