How do you find the percent of decrease

Adding and subtracting matricesfind the value of each variable. x = and y = would

Select the correct answer from the drop-down menu. subtracting 3xy^2 from 8xy^2 gives the same result as the expression. [tex]3xy ^{2} - 8xy ^{2} [/tex][tex] { - 7xy}^{2} - {2xy}^{2} [/tex][tex] {7xy}^{2} - {2xy}^{2} [/tex]

Atemperature of 1.64◦f corresponds to answer in units of ◦c.