John and ariana bought school supplies. john spent $10.60 on 5 notebooks and 4 pens. ariana spent $8.30 on 4 notebooks and 3 pens. what is the cost of 1 notebook and what is the cost of 1 pen?

What is the prime factorization of 230

How do i start to solve? would appreciate a walk-thru! a bird sitting 16ft above the ground in an apple tree dislodges an apple. after how many seconds does the apple land on the ground? (assuming that no branches will interfere with it's fall)

Can some one explain this i got sent this. is this a threat i’m scared