3x+y=5 , 2x-2y=22 solve the system of equations by the addition method

Which expression is equivalent to7_/x^2 ÷ 5_/y^3? assume y# 0

Acompany manufactures three types of cabinets. it makes 110 cabinets each week. in the first week, the sum of the number of type-1 cabinets and twice the number of type-2 cabinets produced was 10 more than the number of type-3 cabinets produced. the next week, the number of type-1 cabinets produced was three times more than in the first week, no type-2 cabinets were produced, and the number of type-3 cabinets produced was the same as in the previous week.

What is 100,000 times 1/100,000, using the standard method of multiplication? write the answer as 10 to a power.