The average age of 4 children is 8
the average of 3 of them is 7
what she is the age of the 4th child

Which expression is equivalent to −16y+13 ? −16(−y+13) 16(−y+2) −16(y+2) 16(−y+13)

Factor completely. 4p^2 + 36p + 81 express the answer in the form (ap + b)^2

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