Solve the system of linear equations by elimination

4x - y = 7
4x - 2y = 2

Determine the number of outcomes in the event. decide whether the event is a simple event or not. upper a computer is used to select randomly a number between 1 and 9 comma inclusive. event upper b is selecting a number greater than 4. event upper b has nothing outcome(s). is the event a simple event? (yes or no) because event upper b has (fewer than, exactly, more than) one outcome.

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

Explain why the factor 1.5 is broke. into two numbers in the model.