C$7.(4$ pts$)$ Let $f(x,y)=\sqrt[\phantom{2}]{5-(x^1{v}^1)}.$ Wilh of the hoboting we the inel rared $f(x,y)=e?$ from $0$ to $3$

B$)$ Circles centered at the origin, with ratia increading from $0$ to $3$ as e linerrees from $0$ to $3$

C$)$ Circles centered at the origin, whit ratiar durmeder frem $8$ tes $0$ es e inmore from $0$ to $3$

D$)$ Vertically shifted parabolas

E$)$ Circles centered at the origin, with radius increauly from $0$ to $9$ we cincrmers from $0$ to $3$

C$8.(4$ pts$)$ Let $f(x,y)=sin(xy)ln(x{y}^2).$ Which of the following is $fn(1,1)?$

A$)-sln(1)-\frac{1}{2}$

B$)cos(1)-sin(1)-\frac{1}{2}$

C$)-cos(1)sin(1)-\frac{1}{4}$

D$)cos(1)sin(1)\frac{1}{4}$

E$)cos(1)sin(1)-1$