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Which best explains why this triangle is or is not a right triangle?

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

You have 138.72 in your saving account u take out 45.23 and 18.00 you deposit 75.85 into your account