Simplify.
a^6
——
a^2

a) -a

a^3

b) a^5

a

c) a^4

d) 1

a^4

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