Which statement is true for the equation 5n − 4 = 5n − 3?

it has infinitely many solutions.
it has two solutions.
it has one solution.
it has no solution.

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2

Adesigner charges a one time fee of $200 plus $40 an hour for each project. write an expression to represent how much money the designer will make for a project

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.