Is 0.3 great than or less than 0.39

Arrange these numbers from least to greatest 3/5 5/7 2/9

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