which equation or inequality shows the relationship between the values 17 and/-7?

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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

Matt had 5 library books. he checked out 1 additional book every week without retuening any books. whats the matching equation