She remove (withdrew) $55 from her account. Her saving balance(d) decreased by $55
$4.00 because
$15 - $7 = $8 than divide it by 2 which gives the $4 dollars for each 2 people
Answer:
1) difference of squares, then its factors are (x+4)(x+2)
2) 3 (x+4)/2 (x-4)(x+4)
3/2 (x-4)
3) 3x+11/5x-9
