Can somebody me to understand this question

If the wwight of a package is multiplied by 7/10 the result is 65.8 find the weight of the package

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]

Solve the equation by completing the square. x^2+2x=17