Please answer this correctly without making mistakes

What are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2

The wheels of a bicycle have a diameter of 70cm. how many meters will the bicycle travel if each wheel makes 50 revolutions

Which expression demonstrates the use of the commutative property of addition in the first step of simplifying the expression (-1+i)+(21+5i)+0