Which value is equivalent to 3 x 12 / ( 4 + 2)

A 6

B 11

C 12

D 15

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

Interpret the following expression (5y^2-7)^3/(2y)^2

Which equation represents a direct linear variationa. y=x2b. y=2/5xc. y=1/xd. y=x+3