Find the line integral with respect to arc length ∫C​(4y+5x)ds, where C is the line segment in the xy-plane with endpoints P=(8,0) and Q=(0,4).
a) r(t)=<8−8t,4t>
b) ∫01​(256−176t)dt
c) 1056
d) ∫C​(4y+5x)ds=∫01​(256−176t)dt