Eutectic phase diagram and level rule: Consider the binary copper$-$silver phase diagram shown below. Conduct phase analysis of a Cu$-50$ wt$.\%Ag$ at $700C.$ What are $($a$)$ the phases present? $(1$ points$)($b$)$ the chemical compositions of each phase? $(2$ points$)($c$)$ the amounts of each phase? $(2$ points$)$