Which pair of expressions below is equivalent? A. x+y+x+y and 2(x + y)
B. 5(2x – 3y) and 10x – 3y
C. 4x - 5y and 5y - 4x
D. 9x + 2y and 11xy

Naomi’s parents want to have 50,000, saved for her college education, if they invest 20000 today and earn 7% interest compound annually, about how long will it take them to save 50 thousand

Leo has b boxes of pencils. each box contains 6 pencils. he has a total of 42 pencils. the equation that represents this situation the value of b that makes the equation true the first one is b+6=42,6b=42,b=42+6,or 42b=6 the second one are 7,836 48

Average acceleration: i have no idea how to do this.