Two times a number plus four is 22. what is the number?

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

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup

Write the equation in logarithmic form m^x=n