Jenna earns 520 for working 40 hours. at this rate ,how many hours must she work to earn 2,600? ( )

Which graph represents the equation y =4x

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b

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.