There something you ain’t giving us in this equation
Answer:
I <em>believe </em>it would be 4:7 books (the 4 new ones : the 7 older books).
Hope this helps!
Answer:
$45.63
Step-by-step explanation:

or all together
50,145 cm³ * 2.6 g/cm³ * 0.35/kg = $45.63
Father and daguther together
father=180
father and daughter is 7 times daught
father+x=7x
180+x=7x
D is answer
and daughter=30lb
I believe the correct answer is B. -5