Can you help me with this equation for each item that has 3 answers on it pls answer it quick plzzz

8000 + 8800 + 8000 + 8 million + 80 trillion + another a katrillion equals

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

Rose bought a new hat when she was on vacation. the following formula describes the percent sales tax rose paid b=t-c/c