(1 point) find ∬rf(x, y)da∬rf(x, y)da where f(x, y)=xf(x, y)=x and r=[1,6]×[4,5]r=[1,6]×[4,5].

The class wants to raise a total of $750.if they receive a profit of $1.25 from each candybar sold, how many bars must they sell to reachtheir goal

Name the most appropriate metric unit for each measurement like a length of an carrot

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