A$).66276$

B$)\mathrm{.}33724$

C$)\mathrm{.}01795$

D$)\mathrm{.}95482$

E$).75258$

QUESTION $3$

Billy Riphahn has requested his investment broker to invest a sum of $$400,000$ of his money into the list of investments vehicles listed here with their respective retum rates. However, he has some specific instructions that he would like to have them follow. His goal is the maximize his return on investment given these requirements. X$1=$ Edwards Electronics, Return Rate $=2\mathrm{.}5\%$;$x2=$ Revmont Electronics, Return Rate $=5\mathrm{.}7\%$;$x3=$ Wheelhouse Waterways, Return Rate $=3\mathrm{.}7\%$;$x4=$ Greenhouse Gas Byproducts, Return Rate $=7\mathrm{.}7\%$; and X$5=$ Be Happy Pharmaceuticals, Return Rate $=12\mathrm{.}8\%.$ In formulating the equations in a linear programming problem: Billy has requested that at least $20\%$ of the investments should be placed in a combination of pharmaceuticals and waterways.

Which is the best way to write this constraint?

A$)x2+x4\mathrm{.}2(x1+x2+x3+x4+x5)$

B$)\mathrm{.}20(400,000)3\mathrm{.}7(x3)+12\mathrm{.}8(x5)$

C$)x3+x5\mathrm{.}2(x1+x2+x3+x4+x5)$

D$)0\mathrm{.}37x_3+0\mathrm{.}125=\mathrm{.}2(x1+x2+x3+x4+x5)$

E$)x35\mathrm{.}2($$$400,000)$

QUESTION $4$

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