(3x - 4y) (2x + 7y) what is the answer?​

Ineeeeed this is due tomorrow and i dont know the answer can you find all the exponents

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

What is the range for 31,39,29,34,37,24,36,33,34,28