The value of 2 · 5^2 is 100. True or False? If n = 4, the value of the expression 28 - 12 + ÷ 2 is .
A) 15 B) 17 C) 17/2 D) 21

Please answer both!

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

Is it greater than or less than7*3_9*2

Factor the polynomial. b^2 + 4b + 4