Please help me answer this.

Find the given elements if matrix d:

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab

Afunction, f(x), represents the height of a plant x months after being planted. students measure and record the height on a monthly basis. select the appropriate domain for this situation. a. the set of all positive real numbers b. the set of all integers oc. the set of all positive integers od. the set of all real numbers reset next