PLEASE HELP ASAP DUE AT 11:59

Somone me i want to know what 18 hours out of 24 hours in a fraction

Find the volume of the described solid.the solid lies between planes perpendicular to the x-axis at x = 0 and x=7. the cross sectionsperpendicular to the x-axis between these planes are squares whose bases run from the parabolay=-31x to the parabola y = 30/x.a) 441b) 147c) 864d) 882

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?