42.50 at 10% sales tax. how much will the tax be?

Choose the point slope form of the equation below that represents the like that passes through the points (-6,4) and (2, 0)

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

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?