What is x in this equation “40x =80

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

True or false: the graph of y=f(bx) is a horizontal compression of the graph y=f(x) if b< 1

In the next 10 years, how do you think hipaa guidelines will affect the roles, responsibilities and tools of a medical transcriptionist