What type of angle is this?

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

Convert 4 3/5 cups to pints if 2 cups equals 1 pint

After how many years are the salaries offered by company a and company b the sameco. a starting salary $24,000 yearly increase of 3000co. b starting salary $30,000 yearly increase of 2400