Prove if 5n+3 is odd, then 7n+4 is even

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

How many grams the dog will eat in 3 days?

What is the measure of angle x? answer